User:Ilmari Karonen/checkusage.js

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Documentation for this user script can be added at User:Ilmari Karonen/checkusage.

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// CHECK IMAGE USAGE:
addOnloadHook(function () {
    var title;
    if (!(title = document.getElementById('t-whatlinkshere') )) return;
    if (!(title = title.getElementsByTagName('a')[0] )) return;
    if (!(title = title.href )) return;
    var re = /^.*\/wiki\/Special:Whatlinkshere\/Image:/;
    if (!title.match(re)) return;
    title = title.replace(re, '');
    addLink('p-tb', 'http://www.juelich.de/avatar/check-usage/check-usage.php?template&filename='+title,
            'Check image usage', 't-checkusage', 'Check usage of this image on various Wikimedia projects');
});