User:Guywan/Scripts/ConfirmLogout.js

Code that you insert on this page could contain malicious content capable of compromising your account. If you import a script from another page with "importScript", "mw.loader.load", "iusc", or "lusc", take note that this causes you to dynamically load a remote script, which could be changed by others. Editors are responsible for all edits and actions they perform, including by scripts. User scripts are not centrally supported and may malfunction or become inoperable due to software changes. A guide to help you find broken scripts is available. If you are unsure whether code you are adding to this page is safe, you can ask at the appropriate village pump.
This code will be executed when previewing this page.

This user script seems to have a documentation page at User:Guywan/Scripts/ConfirmLogout.

Note: After saving, you have to bypass your browser's cache to see the changes. Google Chrome, Firefox, Microsoft Edge and Safari: Hold down the ⇧ Shift key and click the Reload toolbar button. For details and instructions about other browsers, see Wikipedia:Bypass your cache.

$(() =>
{
    var logout = $("#pt-logout a")[0];
    if(!logout) return;
    
    var new_logout = document.createElement("a");
    new_logout.innerText = logout.innerText;
    logout.insertAdjacentElement("afterend", new_logout);
    logout.remove();
    
    document.getElementsByTagName("body")[0].insertAdjacentHTML("afterbegin", "<style>#use_conlog button { margin: 0 0.2em; background:transparent; border:0.2em solid white; border-radius: 9em; padding: 0 0.7em; box-sizing: border-box; color: inherit; font-weight: inherit; } #use_conlog button:active { background:rgba(255,255,255,0.6)}</style>");
    document.getElementsByTagName("body")[0].insertAdjacentHTML("afterbegin", "<div id='use_conlog'></div>");
    
    var conlog = document.getElementById("use_conlog");
    
    new_logout.addEventListener("click", event =>
    {
        if(conlog.lastChild)
        {
        	console.log("Used");
        	
            var previous_conlog = conlog.lastChild;
            previous_conlog.style.transform = "translateY(-130%)";
            setTimeout(() => { previous_conlog.remove(); }, 500);
        }

        conlog.insertAdjacentHTML("beforeend",
            "<div onclick='this.style.transform = \"translateY(-130%)\";setTimeout(function(){this.remove()}.bind(this), 500);' style='" +
            "position:fixed; top:0; left:0; right:0; margin: 0 0 auto 0; height: auto; line-height: 1.4em; " +
            "padding: 0.6em 2em; opacity: 1; text-align: center; z-index: 9999; font-size: 86%; box-shadow: 0 2px 5px rgba(0,0,0,0.2); " +
            "font-weight: bold; transform: translateY(-130%); transition: all 0.2s;" +
            "background: #EEE; color: #000; border: 2px solid #00F;'>" +
            "<div style='margin-bottom: 0.5em;'>You clicked on a log-out link. Do you want to continue?</div>" +
            "<div><button style='border: 2px solid #00F; color: #000'>No</button>" +
            "<button style='border: 2px solid #00F; color: #000' onclick='window.location=\"/wiki/special:logout\"'>Log out</button></div></div>"
        );

        var notice_element = conlog.lastChild;

        setTimeout(() => { notice_element.style.transform = "translateY(0%)"; }, 10);
        
        event.preventDefault();
        event.stopPropagation();
    });
});