Wikipedia:WikiProject User scripts/Scripts/Unwatch

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// This script adds an "unwatch" link to each entry in your watchlist. This version works regardless of whether you have the "Enhanced recent changes" option selected in your user preferences. By default the links take you back to your watchlist. If you'd prefer them to take you to a "Removed from watchlist" page like the unwatch links at the top of the watched pages, uncomment the second line in the function.

There is an AJAX version at User:Quarl/unwatch.js (unwatches articles without opening an actual link, and crosses it off your list when unwatching is acknowledged)

addOnloadHook(function () {
    var query_prefix = "title=Special:Watchlist&action=submit&remove=1&id[]=";
    //var query_prefix = "action=unwatch&title=";

    if (window.location.href.indexOf("Special:Watchlist") < 0) return;
    if (window.location.href.indexOf("Special:Watchlist/edit") >= 0) return;

    var links = document.getElementById('content').getElementsByTagName('a');
    for (var i = 0; i < links.length; i++) {
        if (links[i].href.substring(links[i].href.length-15) != '&action=history')
            continue;
        var unwatch = document.createElement('a');
        unwatch.href = "/w/index.php?" + query_prefix + encodeURIComponent(links[i].title);
        unwatch.title = "Unwatch "+links[i].title;
        unwatch.appendChild(document.createTextNode("unwatch"));
        links[i].parentNode.insertBefore(unwatch, links[i].nextSibling);
        // kluge to handle case where "diff" is unlinked:
        var delim = links[i].previousSibling;
        delim = (delim.nodeType == 3 ? delim.nodeValue : "");
        links[i].parentNode.insertBefore(document.createTextNode(delim.replace(/^.*diff/, "")), unwatch);
    }
});

//