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POjQuery Undelegate does not work
 

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  1. POjQuery Undelegate does not work
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    <p>I'm creating a responsive template and I want to remove the listeners on an element when screen is being resized or is smaller than the specified width.<br /> Imagine an menu which when you hover on it's items, it shows you the sub-menus in normal displays but the same menu in mobile devices will show the sub-menus only by tapping or clicking on the items.</p> <p>I can't make the undelegate work. In resized screen I still have the <code>mouseover</code> and <code>mouseout</code> event-listeners. I'm not getting any errors in console and I've tried both:</p> <ul> <li><code>.off('mouseover', 'li')</code></li> <li><code>.off('mouseover')</code></li> <li><code>.undelegate('li', 'mouseover')</code></li> <li><code>.undelegate('li')</code></li> </ul> <p><br />and none of them works.</p> <pre><code>var $window = $(window); function handleSidenav() { $(".nav-list").delegate('li', 'mouseover', function(e) { $(this).find("a").addClass('active'); $(this).find("div.sub-items").toggle(); }).delegate('li', 'mouseout', function(e) { $(this).find('a').removeClass('active'); $(this).find("div.sub-items").toggle(); }); } function checkWidth() { var windowsize = $window.width(); if (windowsize &lt; 767) { smallScreenDelegation(); } else { SmallScreenUndelegation(); } } checkWidth(); handleSidenav(); $window.resize(checkWidth()); function smallScreenDelegation() { $(".nav-list").undelegate('li'); //It's not working $(".nav-list").undelegate('li'); //It's not working $(".nav-list").delegate('li a:first', 'click', function(event) { if ($(this).next().is(':hidden')) { $(this).addClass('active'); $(this).next().slideDown('slow'); } else { $(this).removeClass('active').next().slideUp('slow'); } event.preventDefault(); }); } </code></pre>
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    1. COYou do of course realize you've just made a major boo-boo, as you're rebinding the event handlers on each and every browser resize, probably at some point causing something similar to a stack overflow ?
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    2. COI've run into this before, and I think it has to do with you adding a class on to the delegate mouseover before that class exists.
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      1. USnick
    3. CO@MarcelGwerder `mouseover` and `mouseout` are often simulated on touch devices when a touch happens.
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      1. USt.niese
 

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