I wrote a Chrome browser extension to hide Top Content posts from Quora, which bother users following too few topics. A user's feed in Quora.com starts as a list of posts relevant to the user, including a set of Top Content posts. As the user scrolls down the page, it loads more posts for them to view. My extension triggers its initial removal when the DOM loads, and removes all Top Content posts currently visible to the user. This in itself triggers Quora to load in more posts. My extension responds to the new load by running again and removing the Top Content posts again. This seems to work well, but I'm concerned about Performance. In some cases, Quora goes through and loads the entire user's feed over a much shorter time, even without action from the user. Github is available here.main.jsvar QuoraExtension ={/* Initialize Quora Extension */main: function(){    QuoraExtension.hideContent();},/* Hide Selected Content From Quora */hideContent: function(){    $(document).ready(        function()        {            //Run the clean out as soon as possible            QuoraExtension.hideTopContent();            /*                Now, we add a listener for when the DOM tree is updated,                when it is, we check for more content to hide.                Timeouts are used to prevent infinite loops of removals                Removal of content can sometimes trigger another check,                so timeouts prevent us from using too much processing             */            var hideTopContentTimeout = null;            document.addEventListener(DOMSubtreeModified, function() {                if(hideTopContentTimeout) {                    clearTimeout(hideTopContentTimeout);                }                hideTopContentTimeout = setTimeout(QuoraExtension.hideTopContent, 500);            }, false);        }    );},/* Hide Top Content sections */hideTopContent: function(){    var $topContent = jQuery(span:contains('Top content on Quora')).closest('.pagedlist_item');    $topContent.hide();}};// Initialize QuoraExtension if JQuery is availableif(!!jQuery){    QuoraExtension.main();}manifest.json{manifest_version: 2,name: Quora Extension by 2NickPick,description: Utilities for using Quora.com,version: 0.1,permissions: [    activeTab],content_scripts: [    {        matches: [https://*.quora.com/*],        js: [lib/jquery/1.7.2/jquery.min.js, main.js],        runat: document_start    }]}
Remove sections of content from Quora.com
javascript;performance;jquery;google chrome