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POjQuery - on window scroll run a function without any delay
 

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  1. POjQuery - on window scroll run a function without any delay
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    <p>I have an issue with a jquery function. You can see a working demo here - <a href="http://dev.sreejesh.in/menuissue/" rel="nofollow">http://dev.sreejesh.in/menuissue/</a> . As you can see when the user scrolls down to the page, I have written a jQuery function(which will triger on scroll) to check scroll pixel. When the browser scrolls to a certain pixel(height of the sidemenu block), the Menu block will stay fixed &amp; rest of the content scrolls as normal. </p> <p>The functionality is working now, however the problem is menublocks makes a jumps when this function runs. I think this is because of the delay in running the function. Hope you guys have any nice trick to fix this.</p> <p>I used an if/else function to check the scroll pixel, so when the scrolled pixel is greater than menublock height it will add a class "fixed" .</p> <p>I use the following code.</p> <p><strong>HTML</strong></p> <pre><code>&lt;div id="globalwrapper"&gt; &lt;div id="menubar"&gt; ---- Menu List items----- &lt;/div&gt; &lt;div id="mainblock"&gt; ----Main content area---- &lt;/div&gt; &lt;/div&gt; </code></pre> <p><strong>jQuery</strong></p> <pre><code>$(document).ready(function(){ $(window).scroll(function() { adjustScroll(); }); }); function adjustScroll(){ var windowHeight = $(window).height(); var menublockHeight = $('#menubar').height(); var scrollValue = $(document).scrollTop(); var posValue = menublockHeight - windowHeight; var menuStatus = $('#menubar').css('left'); $('#menubar').css('minHeight', windowHeight); $('#menubar').css('height', menublockHeight); console.log(menuStatus); $(document).scroll(function() { if(menuStatus == '0px') { if(scrollValue &gt; posValue){ $('#menubar').addClass('fixed'); $('#menubar').css('marginTop', -posValue); }else { $('#menubar').removeClass('fixed'); $('#menubar').css('marginTop', '0px'); } } }); } </code></pre>
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