MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */
$(document).ready(function(){
    // find categories
    categories = [];
    $("#mw-normal-catlinks a").each(function(i) {
        // debug:
        // console.log($(this).html());
        categories.push($.trim($(this).html()));
    });
    //console.log(categories);
    
    // now go over all navigation links and hide all, where we don't have that category
    $("#p-navigation div ul li").each(function(i) {
        // debug:
        // console.log($(this).attr("class"));
        entry_classes = $.trim($(this).attr("class")).split(" ");
        //console.log(entry_classes);
        if(entry_classes.indexOf("nav1") != -1) {
            found = false;
            entry_classes.forEach(function(entry_class) {
                // ok.. we might consider hiding that..
                cat_name = entry_class.substring(4);
                if(categories.indexOf(cat_name) != -1) {
                    // that category we do have..
                    found = true;
                }
            });
            if(!found) {
                $(this).hide();
            }
        }
    });
})