Extension:Gadgets/Scripts/SubPages.js
From MediaWiki.org
/** subpages **/ addOnloadHook(function () { var NSWithoutSubpages = new Array(-1, 6, 8, 12, 13, 14, 15, 104, 105); if (document.getElementById('p-tb') && NSWithoutSubpages.indexOf(wgNamespaceNumber) == -1) { var lienSouspages = '/wiki/Special:PrefixIndex/' + wgPageName + '/'; addPortletLink('p-tb', lienSouspages, 'Subpages', 't-subpages', 'Subpages of this page'); } });