https://de.wikipedia.org/w/index.php?action=history&feed=atom&title=JSX_%28JavaScript%29
JSX (JavaScript) - Versionsgeschichte
2025-05-24T07:46:50Z
Versionsgeschichte dieser Seite in Wikipedia
MediaWiki 1.45.0-wmf.2
https://de.wikipedia.org/w/index.php?title=JSX_(JavaScript)&diff=237259537&oldid=prev
2003:DE:371F:DABE:603A:E0BD:BD3F:A182 am 12. September 2023 um 10:54 Uhr
2023-09-12T10:54:12Z
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>'''JSX''' (''JavaScript Syntax Extension'' oder gelegentlich ''JavaScript XML'') ist <del style="font-weight: bold; text-decoration: none;">ein</del> [[Syntax]]-Erweiterung für [[JavaScript]] ([[Syntaktischer Zucker]]).<ref>{{Internetquelle |url=https://de.reactjs.org/docs/introducing-jsx.html |titel=Einführung in JSX – React |sprache=en |abruf=2022-06-10}}</ref> JSX wurde für das Framework [[React]] entwickelt und wird als [[Auszeichnungssprache]] für [[Steuerelement|Komponenten]] verwendet.</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>'''JSX''' (''JavaScript Syntax Extension'' oder gelegentlich ''JavaScript XML'') ist <ins style="font-weight: bold; text-decoration: none;">eine</ins> [[Syntax]]-Erweiterung für [[JavaScript]] ([[Syntaktischer Zucker]]).<ref>{{Internetquelle |url=https://de.reactjs.org/docs/introducing-jsx.html |titel=Einführung in JSX – React |sprache=en |abruf=2022-06-10}}</ref> JSX wurde für das Framework [[React]] entwickelt und wird als [[Auszeichnungssprache]] für [[Steuerelement|Komponenten]] verwendet.</div></td>
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2003:DE:371F:DABE:603A:E0BD:BD3F:A182
https://de.wikipedia.org/w/index.php?title=JSX_(JavaScript)&diff=230193368&oldid=prev
Invisigoth67: typo
2023-01-25T10:01:31Z
<p>typo</p>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>const element = <h1>{title}</h1>;</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>const element = <h1>{title}</h1>;</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight>Standardmäßig entschlüsselt React DOM alle in JSX eingebetteten Werte, bevor sie gerendert werden. Alles wird in eine [[Zeichenkette]] konvertiert, bevor es gerendert wird<del style="font-weight: bold; text-decoration: none;">.</del>.<ref>{{Internetquelle |url=https://www.mariokandut.com/what-is-jsx-in-react/ |titel=What is JSX and why to use it? |sprache=en |abruf=2022-06-10}}</ref></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight>Standardmäßig entschlüsselt React DOM alle in JSX eingebetteten Werte, bevor sie gerendert werden. Alles wird in eine [[Zeichenkette]] konvertiert, bevor es gerendert wird.<ref>{{Internetquelle |url=https://www.mariokandut.com/what-is-jsx-in-react/ |titel=What is JSX and why to use it? |sprache=en |abruf=2022-06-10}}</ref></div></td>
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Invisigoth67
https://de.wikipedia.org/w/index.php?title=JSX_(JavaScript)&diff=228725539&oldid=prev
Simon04: erw.
2022-12-10T10:21:35Z
<p>erw.</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version vom 10. Dezember 2022, 12:21 Uhr</td>
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<td class="diff-marker"><a class="mw-diff-movedpara-left" title="Der Absatz wurde verschoben. Klicken, um zur neuen Stelle zu springen." href="#movedpara_2_5_rhs">⚫</a></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><a name="movedpara_1_0_lhs"></a>'''JSX''' <del style="font-weight: bold; text-decoration: none;">steht für </del>''<del style="font-weight: bold; text-decoration: none;">Javascript</del> Syntax Extension'' oder ''<del style="font-weight: bold; text-decoration: none;">Javascript</del> XML''<del style="font-weight: bold; text-decoration: none;"> und</del> ist <del style="font-weight: bold; text-decoration: none;">eine</del> [[<del style="font-weight: bold; text-decoration: none;">Erweiterung</del>]] <del style="font-weight: bold; text-decoration: none;">der</del> <del style="font-weight: bold; text-decoration: none;">gängigen Javascript-</del>[[<del style="font-weight: bold; text-decoration: none;">Syntax</del>]] <del style="font-weight: bold; text-decoration: none;">von </del>[[<del style="font-weight: bold; text-decoration: none;">React</del>]].<ref>{{Internetquelle |url=https://de.reactjs.org/docs/introducing-jsx.html |titel=Einführung in JSX – React |sprache=en |abruf=2022-06-10}}</ref></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>{{Infobox Programmiersprache</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>| Logo = <syntaxhighlight lang="javascript">const element = <h1>Hallo Welt!</h1>;</div></td>
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<td class="diff-marker"><a class="mw-diff-movedpara-right" title="Der Absatz wurde verschoben. Klicken, um zur alten Stelle zu springen." href="#movedpara_1_0_lhs">⚫</a></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><a name="movedpara_2_5_rhs"></a>'''JSX''' <ins style="font-weight: bold; text-decoration: none;">(</ins>''<ins style="font-weight: bold; text-decoration: none;">JavaScript</ins> Syntax Extension'' oder<ins style="font-weight: bold; text-decoration: none;"> gelegentlich</ins> ''<ins style="font-weight: bold; text-decoration: none;">JavaScript</ins> XML''<ins style="font-weight: bold; text-decoration: none;">)</ins> ist <ins style="font-weight: bold; text-decoration: none;">ein</ins> [[<ins style="font-weight: bold; text-decoration: none;">Syntax</ins>]]<ins style="font-weight: bold; text-decoration: none;">-Erweiterung</ins> <ins style="font-weight: bold; text-decoration: none;">für</ins> [[<ins style="font-weight: bold; text-decoration: none;">JavaScript</ins>]] <ins style="font-weight: bold; text-decoration: none;">(</ins>[[<ins style="font-weight: bold; text-decoration: none;">Syntaktischer Zucker</ins>]]<ins style="font-weight: bold; text-decoration: none;">)</ins>.<ref>{{Internetquelle |url=https://de.reactjs.org/docs/introducing-jsx.html |titel=Einführung in JSX – React |sprache=en |abruf=2022-06-10}}</ref><ins style="font-weight: bold; text-decoration: none;"> JSX wurde für das Framework [[React]] entwickelt und wird als [[Auszeichnungssprache]] für [[Steuerelement|Komponenten]] verwendet.</ins></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Syntax ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Syntax ==</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>JSX ist in seiner Syntax ähnlich zu [[Hypertext Markup Language]], wie das folgende Beispiel zeigt:<ref>{{Internetquelle |url=https://facebook.github.io/jsx/ |titel=JSX |werk=facebook.github.io/jsx |datum=2022-08-04 |sprache=en |abruf=2022-12}}</ref><syntaxhighlight lang="javascript"></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>In ''JSX'' ist jedes Tag ein „[[Funktion (Programmierung)|Funktionsaufruf]]“, der ein Element erzeugt. Wenn JSX in [[React]] „übersetzt“ wird, sieht das Ergebnis so aus: <syntaxhighlight lang="javascript"></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>function createElement(elementType, props, ...children) {}</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Beim [[Compiler|Übersetzen]] von JSX wird daraus der folgende React-JavaScript-Code mit erzeugt:<ref><code>[https://reactjs.org/docs/react-api.html#createelement React.createElement]</code></ref> <syntaxhighlight lang="javascript"></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>const user = "Max Mustermann";</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>const element = React.createElement("div", {}, [</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> React.createElement("h1", { className: "greeting" }, ["Hallo, ", user]),</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> React.createElement("a", { href: "https://www.reactjs.org" }, ["link"])</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>]);</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Der folgende Beispielcode zeigt, wie man JSX in [[React]] einbetten kann:<syntaxhighlight lang="javascript"></div></td>
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<td class="diff-marker"><a class="mw-diff-movedpara-right" title="Der Absatz wurde verschoben. Klicken, um zur alten Stelle zu springen." href="#movedpara_18_1_lhs">⚫</a></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><a name="movedpara_14_0_rhs"></a><ins style="font-weight: bold; text-decoration: none;">Der</ins> <ins style="font-weight: bold; text-decoration: none;">folgende Beispielcode zeigt, wie man JSX in React mittels</ins> <code>ReactDOM.render()</code> <ins style="font-weight: bold; text-decoration: none;">einbetten</ins> <ins style="font-weight: bold; text-decoration: none;">kann</ins>.<ref>{{Internetquelle |url=https://t3n.de/consent?redirecturl=%2Fnews%2Feigentlich-jsx-wofuer-das-867296%2F |titel=t3n – digital pioneers {{!}} Was ist JSX und wofür braucht man das? |sprache=de |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://www.letsreact.org/what-is-jsx/ |titel=What is JSX? How to use JavaScript with React? – Let's React |sprache=en-US |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://de.reactjs.org/docs/introducing-jsx.html |titel=Einführung in JSX – React |sprache=en |abruf=2022-06-10}}</ref<ins style="font-weight: bold; text-decoration: none;">> <syntaxhighlight lang="javascript"</ins>></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>const name = 'Max Mustermann';</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>const name = 'Max Mustermann';</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>const element = <h1>Hallo, {name}</h1>;</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>const element = <h1>Hallo, {name}</h1>;</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> document.getElementById('root')</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> document.getElementById('root')</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>);</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>);</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight>In diesem Code werden 2 Konstanten erstellt und den Zeichenfolgenwert an den [[Hypertext Markup Language|HTML-Code]] übergeben.</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td class="diff-marker"><a class="mw-diff-movedpara-left" title="Der Absatz wurde verschoben. Klicken, um zur neuen Stelle zu springen." href="#movedpara_14_0_rhs">⚫</a></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><a name="movedpara_18_1_lhs"></a><del style="font-weight: bold; text-decoration: none;">Danach</del> <del style="font-weight: bold; text-decoration: none;">wird</del> <code>ReactDOM.render()</code> <del style="font-weight: bold; text-decoration: none;">aufgerufen und den HTML-Code zusammen mit dem „root“-Element</del> <del style="font-weight: bold; text-decoration: none;">übergeben</del>.<ref>{{Internetquelle |url=https://t3n.de/consent?redirecturl=%2Fnews%2Feigentlich-jsx-wofuer-das-867296%2F |titel=t3n – digital pioneers {{!}} Was ist JSX und wofür braucht man das? |sprache=de |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://www.letsreact.org/what-is-jsx/ |titel=What is JSX? How to use JavaScript with React? – Let's React |sprache=en-US |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://de.reactjs.org/docs/introducing-jsx.html |titel=Einführung in JSX – React |sprache=en |abruf=2022-06-10}}</ref></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=== Attribute ===</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=== Attribute ===</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Man benutzt meistens Anführungszeichen um string-Literale als Attribute zu verwenden:<syntaxhighlight lang="javascript"></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Man benutzt meistens Anführungszeichen um string-Literale als Attribute zu verwenden:<syntaxhighlight lang="javascript"></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=== Sicherheit (XSS) ===</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>JSX verhindert ''Injection-Attacken'' wie XSS. Es ist sicher, Benutzereingaben wie diese einzubetten:<syntaxhighlight lang="javascript"></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>JSX verhindert ''Injection-Attacken'' wie <ins style="font-weight: bold; text-decoration: none;">[[Cross-Site-Scripting]] (</ins>XSS<ins style="font-weight: bold; text-decoration: none;">)</ins>. Es ist sicher, Benutzereingaben wie diese einzubetten:<syntaxhighlight lang="javascript"></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>const title = response.potentiallyMaliciousInput;</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>const title = response.potentiallyMaliciousInput;</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>const element = <h1>{title}</h1>;</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>const element = <h1>{title}</h1>;</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight>Standardmäßig entschlüsselt React DOM alle in JSX eingebetteten Werte, bevor sie gerendert werden. Alles wird in <del style="font-weight: bold; text-decoration: none;">einen</del> [[<del style="font-weight: bold; text-decoration: none;">String</del>]] konvertiert, bevor es gerendert wird.<del style="font-weight: bold; text-decoration: none;"> Dies hilft, XSS-Angriffe ([[Cross-Site-Scripting]]) zu verhindern</del>.<ref>{{Internetquelle |url=https://www.mariokandut.com/what-is-jsx-in-react/ |titel=What is JSX and why to use it? |sprache=en |abruf=2022-06-10}}</ref></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight>Standardmäßig entschlüsselt React DOM alle in JSX eingebetteten Werte, bevor sie gerendert werden. Alles wird in <ins style="font-weight: bold; text-decoration: none;">eine</ins> [[<ins style="font-weight: bold; text-decoration: none;">Zeichenkette</ins>]] konvertiert, bevor es gerendert wird..<ref>{{Internetquelle |url=https://www.mariokandut.com/what-is-jsx-in-react/ |titel=What is JSX and why to use it? |sprache=en |abruf=2022-06-10}}</ref></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=== Props in JSX ===</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Man kann einen beliebigen JavaScript-Ausdruck als ''Prop'' übergeben, indem man ihn mit {} umgibt. Zum Beispiel in diesem Code:<syntaxhighlight lang="javascript"></div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Man kann einen beliebigen JavaScript-Ausdruck als ''Prop'' übergeben, indem man ihn mit <ins style="font-weight: bold; text-decoration: none;"><code></ins>{}<ins style="font-weight: bold; text-decoration: none;"></code></ins> umgibt. Zum Beispiel in diesem Code:<syntaxhighlight lang="javascript"></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><MyComponent foo={1 + 2 + 3 + 4} /></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><MyComponent foo={1 + 2 + 3 + 4} /></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight>Für <code>MyComponent</code> wird der Wert von <code>props.foo</code> 10 sein, weil der Ausdruck 1 + 2 + 3 + 4 ausgewertet wird.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight>Für <code>MyComponent</code> wird der Wert von <code>props.foo</code> 10 sein, weil der Ausdruck 1 + 2 + 3 + 4 ausgewertet wird.</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>''if-Anweisungen'' und ''for-Schleifen'' sind in [[JavaScript]] keine Ausdrücke, daher können sie in JSX nicht direkt verwendet werden.<ref>{{Internetquelle |url=https://reactjs.org/docs/components-and-props.html |titel=Components and Props – React |sprache=en |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://reactjs.org/docs/jsx-in-depth.html |titel=JSX In Depth – React |sprache=en |abruf=2022-06-10}}</ref></div></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>''if-Anweisungen'' und ''for-Schleifen'' sind in [[JavaScript]] keine Ausdrücke<ins style="font-weight: bold; text-decoration: none;"> (sondern Anweisungen)</ins>, daher können sie in JSX nicht direkt verwendet werden.<ref>{{Internetquelle |url=https://reactjs.org/docs/components-and-props.html |titel=Components and Props – React |sprache=en |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://reactjs.org/docs/jsx-in-depth.html |titel=JSX In Depth – React |sprache=en |abruf=2022-06-10}}</ref></div></td>
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<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>== Vue ==</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Das Framework [[Vue.js]] verwendet eine eigene Auszeichnungssprache, kann aber auf Wunsch mit JSX verwendet werden.<ref>{{Internetquelle |url=https://vuejs.org/guide/extras/render-function.html#jsx-tsx |titel=Render Functions & JSX |werk=Vue.js |sprache=en |abruf=2022-12}}</ref></div></td>
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<td colspan="2" class="diff-empty diff-side-deleted"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>== TSX ==</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Zur Verwendung von JSX mit [[TypeScript]] wird die [[Dateierweiterung]] <code>.tsx</code> verwendet.<ref>{{Internetquelle |url=https://www.typescriptlang.org/docs/handbook/jsx.html |titel=JSX |werk=TypeScript Handbook |sprache=en |abruf=2022-12}}</ref></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Siehe auch ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Siehe auch ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* [[JavaScript]]</div></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* [[JavaScript<ins style="font-weight: bold; text-decoration: none;">]] und [[TypeScript</ins>]]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[React]]</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[React]]</div></td>
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<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* [[ECMAScript for XML]]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Einzelnachweise ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Einzelnachweise ==</div></td>
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Simon04
https://de.wikipedia.org/w/index.php?title=JSX_(JavaScript)&diff=226843012&oldid=prev
Aka: typografische Anführungszeichen, Kleinkram
2022-10-07T15:01:28Z
<p>typografische Anführungszeichen, Kleinkram</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Nächstältere Version</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version vom 7. Oktober 2022, 17:01 Uhr</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Syntax ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Syntax ==</div></td>
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<td class="diff-marker" data-marker="−"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>In ''JSX'' ist jedes Tag ein „[[Funktion (Programmierung)|Funktionsaufruf]]“, der ein Element erzeugt. Wenn JSX in [[React]] <del style="font-weight: bold; text-decoration: none;">"übersetzt"</del> wird, sieht das Ergebnis so aus: <syntaxhighlight lang="javascript"></div></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>In ''JSX'' ist jedes Tag ein „[[Funktion (Programmierung)|Funktionsaufruf]]“, der ein Element erzeugt. Wenn JSX in [[React]] <ins style="font-weight: bold; text-decoration: none;">„übersetzt“</ins> wird, sieht das Ergebnis so aus: <syntaxhighlight lang="javascript"></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>function createElement(elementType, props, ...children) {}</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>function createElement(elementType, props, ...children) {}</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight>Dies liegt daran, dass jedes Tag mit der Funktion <code>createElement()</code> ein Element erstellt.<del style="font-weight: bold; text-decoration: none;"> </del></div></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight>Dies liegt daran, dass jedes Tag mit der Funktion <code>createElement()</code> ein Element erstellt.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Der folgende Beispielcode zeigt, wie man JSX in [[React]] einbetten kann:<syntaxhighlight lang="javascript"></div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Der folgende Beispielcode zeigt, wie man JSX in [[React]] einbetten kann:<syntaxhighlight lang="javascript"></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> document.getElementById('root')</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div> document.getElementById('root')</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>);</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>);</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight>In diesem Code werden 2 Konstanten erstellt und den Zeichenfolgenwert an den [[Hypertext Markup Language|HTML-Code]] übergeben.<del style="font-weight: bold; text-decoration: none;"> </del></div></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight>In diesem Code werden 2 Konstanten erstellt und den Zeichenfolgenwert an den [[Hypertext Markup Language|HTML-Code]] übergeben.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Danach wird <code>ReactDOM.render()</code> aufgerufen und den HTML-Code zusammen mit dem „root“-Element übergeben.<ref>{{Internetquelle |url=https://t3n.de/consent?redirecturl=%2Fnews%2Feigentlich-jsx-wofuer-das-867296%2F |titel=t3n – digital pioneers {{!}} Was ist JSX und wofür braucht man das? |sprache=de |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://www.letsreact.org/what-is-jsx/ |titel=What is JSX? How to use JavaScript with React? – Let's React |sprache=en-US |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://de.reactjs.org/docs/introducing-jsx.html |titel=Einführung in JSX – React |sprache=en |abruf=2022-06-10}}</ref></div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Danach wird <code>ReactDOM.render()</code> aufgerufen und den HTML-Code zusammen mit dem „root“-Element übergeben.<ref>{{Internetquelle |url=https://t3n.de/consent?redirecturl=%2Fnews%2Feigentlich-jsx-wofuer-das-867296%2F |titel=t3n – digital pioneers {{!}} Was ist JSX und wofür braucht man das? |sprache=de |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://www.letsreact.org/what-is-jsx/ |titel=What is JSX? How to use JavaScript with React? – Let's React |sprache=en-US |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://de.reactjs.org/docs/introducing-jsx.html |titel=Einführung in JSX – React |sprache=en |abruf=2022-06-10}}</ref></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight>Für <code>MyComponent</code> wird der Wert von <code>props.foo</code> 10 sein, weil der Ausdruck 1 + 2 + 3 + 4 ausgewertet wird.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight>Für <code>MyComponent</code> wird der Wert von <code>props.foo</code> 10 sein, weil der Ausdruck 1 + 2 + 3 + 4 ausgewertet wird.</div></td>
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<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<tr>
<td class="diff-marker" data-marker="−"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>''if-Anweisungen'' und ''for-Schleifen'' sind in [[JavaScript]] keine Ausdrücke, daher können sie in JSX nicht direkt verwendet werden.<ref>{{Internetquelle |url=https://reactjs.org/docs/components-and-props.html |titel=Components and Props – React |sprache=en |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://reactjs.org/docs/jsx-in-depth.html |titel=JSX In Depth – React |sprache=en |abruf=2022-06-10}}</ref><del style="font-weight: bold; text-decoration: none;"> </del></div></td>
<td class="diff-marker" data-marker="+"></td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>''if-Anweisungen'' und ''for-Schleifen'' sind in [[JavaScript]] keine Ausdrücke, daher können sie in JSX nicht direkt verwendet werden.<ref>{{Internetquelle |url=https://reactjs.org/docs/components-and-props.html |titel=Components and Props – React |sprache=en |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://reactjs.org/docs/jsx-in-depth.html |titel=JSX In Depth – React |sprache=en |abruf=2022-06-10}}</ref></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Siehe auch ==</div></td>
<td class="diff-marker"></td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Siehe auch ==</div></td>
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Aka
https://de.wikipedia.org/w/index.php?title=JSX_(JavaScript)&diff=223585911&oldid=prev
M2k~dewiki: HC: Entferne Kategorie:Javascript; Ergänze Kategorie:JavaScript-Bibliothek
2022-06-10T07:46:44Z
<p><a href="/wiki/Wikipedia:HC" class="mw-redirect" title="Wikipedia:HC">HC</a>: Entferne <a href="/w/index.php?title=Kategorie:Javascript&action=edit&redlink=1" class="new" title="Kategorie:Javascript (Seite nicht vorhanden)">Kategorie:Javascript</a>; Ergänze <a href="/wiki/Kategorie:JavaScript-Bibliothek" title="Kategorie:JavaScript-Bibliothek">Kategorie:JavaScript-Bibliothek</a></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version vom 10. Juni 2022, 09:46 Uhr</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><references /></div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br /></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[Kategorie:<del style="font-weight: bold; text-decoration: none;">Javascript</del>]]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[Kategorie:<ins style="font-weight: bold; text-decoration: none;">JavaScript-Bibliothek</ins>]]</div></td>
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M2k~dewiki
https://de.wikipedia.org/w/index.php?title=JSX_(JavaScript)&diff=223585907&oldid=prev
M2k~dewiki: HC: Ergänze Kategorie:Javascript
2022-06-10T07:46:26Z
<p><a href="/wiki/Wikipedia:HC" class="mw-redirect" title="Wikipedia:HC">HC</a>: Ergänze <a href="/w/index.php?title=Kategorie:Javascript&action=edit&redlink=1" class="new" title="Kategorie:Javascript (Seite nicht vorhanden)">Kategorie:Javascript</a></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Version vom 10. Juni 2022, 09:46 Uhr</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Einzelnachweise ==</div></td>
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M2k~dewiki
https://de.wikipedia.org/w/index.php?title=JSX_(JavaScript)&diff=223584426&oldid=prev
Sky-Dean Dawid: Sky-Dean Dawid verschob die Seite Benutzer:Sky-Dean Dawid/JSX (JavaScript) nach JSX (JavaScript): Artikel vollständig
2022-06-10T06:35:10Z
<p>Sky-Dean Dawid verschob die Seite <a href="/w/index.php?title=Benutzer:Sky-Dean_Dawid/JSX_(JavaScript)&action=edit&redlink=1" class="new" title="Benutzer:Sky-Dean Dawid/JSX (JavaScript) (Seite nicht vorhanden)">Benutzer:Sky-Dean Dawid/JSX (JavaScript)</a> nach <a href="/wiki/JSX_(JavaScript)" title="JSX (JavaScript)">JSX (JavaScript)</a>: Artikel vollständig</p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">← Nächstältere Version</td>
<td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">Version vom 10. Juni 2022, 08:35 Uhr</td>
</tr><tr><td colspan="2" class="diff-notice" lang="de"><div class="mw-diff-empty">(kein Unterschied)</div>
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Sky-Dean Dawid
https://de.wikipedia.org/w/index.php?title=JSX_(JavaScript)&diff=223584415&oldid=prev
Sky-Dean Dawid: Artikel fertig.
2022-06-10T06:34:18Z
<p>Artikel fertig.</p>
<p><b>Neue Seite</b></p><div>'''JSX''' steht für ''Javascript Syntax Extension'' oder ''Javascript XML'' und ist eine [[Erweiterung]] der gängigen Javascript-[[Syntax]] von [[React]].<ref>{{Internetquelle |url=https://de.reactjs.org/docs/introducing-jsx.html |titel=Einführung in JSX – React |sprache=en |abruf=2022-06-10}}</ref><br />
<br />
== Syntax ==<br />
In ''JSX'' ist jedes Tag ein „[[Funktion (Programmierung)|Funktionsaufruf]]“, der ein Element erzeugt. Wenn JSX in [[React]] "übersetzt" wird, sieht das Ergebnis so aus: <syntaxhighlight lang="javascript"><br />
function createElement(elementType, props, ...children) {}<br />
</syntaxhighlight>Dies liegt daran, dass jedes Tag mit der Funktion <code>createElement()</code> ein Element erstellt. <br />
<br />
Der folgende Beispielcode zeigt, wie man JSX in [[React]] einbetten kann:<syntaxhighlight lang="javascript"><br />
const name = 'Max Mustermann';<br />
const element = <h1>Hallo, {name}</h1>;<br />
<br />
ReactDOM.render(<br />
element,<br />
document.getElementById('root')<br />
);<br />
</syntaxhighlight>In diesem Code werden 2 Konstanten erstellt und den Zeichenfolgenwert an den [[Hypertext Markup Language|HTML-Code]] übergeben. <br />
<br />
Danach wird <code>ReactDOM.render()</code> aufgerufen und den HTML-Code zusammen mit dem „root“-Element übergeben.<ref>{{Internetquelle |url=https://t3n.de/consent?redirecturl=%2Fnews%2Feigentlich-jsx-wofuer-das-867296%2F |titel=t3n – digital pioneers {{!}} Was ist JSX und wofür braucht man das? |sprache=de |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://www.letsreact.org/what-is-jsx/ |titel=What is JSX? How to use JavaScript with React? – Let's React |sprache=en-US |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://de.reactjs.org/docs/introducing-jsx.html |titel=Einführung in JSX – React |sprache=en |abruf=2022-06-10}}</ref><br />
<br />
=== Attribute ===<br />
Man benutzt meistens Anführungszeichen um string-Literale als Attribute zu verwenden:<syntaxhighlight lang="javascript"><br />
const element = <a href="https://www.wikipedia.org"> link </a>;<br />
</syntaxhighlight>Ebenfalls kann man geschweifte Klammern verwenden, um JavaScript-Ausdrücke in ein Attribut einzubinden:<syntaxhighlight lang="javascript"><br />
const element = <img src={user.avatarUrl}></img>;<br />
</syntaxhighlight><br />
<br />
=== Sicherheit (XSS) ===<br />
JSX verhindert ''Injection-Attacken'' wie XSS. Es ist sicher, Benutzereingaben wie diese einzubetten:<syntaxhighlight lang="javascript"><br />
const title = response.potentiallyMaliciousInput;<br />
<br />
// Dies ist sicher:<br />
<br />
const element = <h1>{title}</h1>;<br />
</syntaxhighlight>Standardmäßig entschlüsselt React DOM alle in JSX eingebetteten Werte, bevor sie gerendert werden. Alles wird in einen [[String]] konvertiert, bevor es gerendert wird. Dies hilft, XSS-Angriffe ([[Cross-Site-Scripting]]) zu verhindern.<ref>{{Internetquelle |url=https://www.mariokandut.com/what-is-jsx-in-react/ |titel=What is JSX and why to use it? |sprache=en |abruf=2022-06-10}}</ref><br />
<br />
=== Props in JSX ===<br />
Man kann einen beliebigen JavaScript-Ausdruck als ''Prop'' übergeben, indem man ihn mit {} umgibt. Zum Beispiel in diesem Code:<syntaxhighlight lang="javascript"><br />
<MyComponent foo={1 + 2 + 3 + 4} /><br />
</syntaxhighlight>Für <code>MyComponent</code> wird der Wert von <code>props.foo</code> 10 sein, weil der Ausdruck 1 + 2 + 3 + 4 ausgewertet wird.<br />
<br />
''if-Anweisungen'' und ''for-Schleifen'' sind in [[JavaScript]] keine Ausdrücke, daher können sie in JSX nicht direkt verwendet werden.<ref>{{Internetquelle |url=https://reactjs.org/docs/components-and-props.html |titel=Components and Props – React |sprache=en |abruf=2022-06-10}}</ref><ref>{{Internetquelle |url=https://reactjs.org/docs/jsx-in-depth.html |titel=JSX In Depth – React |sprache=en |abruf=2022-06-10}}</ref> <br />
<br />
== Siehe auch ==<br />
<br />
* [[JavaScript]]<br />
* [[React]]<br />
<br />
== Einzelnachweise ==<br />
<references /></div>
Sky-Dean Dawid