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PODoes chaining with queue() and filter() in Jquery increase performance?
 

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    <p>I'm cleaning up some Jquery code. I always read, chaining is good for performance. </p> <p><strong>Question:</strong><br> Does this also include chains with a lots of <strong>queue() and filter()</strong>?</p> <p>For example, I have <strong>unchained</strong>:</p> <pre><code>var self = this, co = el.jqmData("panel"), pop = $('div:jqmData(id="'+co+'")'), wrap = pop.closest('div:jqmData(wrapper="true")'); if ( pop.is(":visible") ) { if ( pop.hasClass('switchable') &amp;&amp; wrap.jqmData('switchable') ) { pop.css('display','none').addClass("switched-hide"); self.panelWidth( true ); } else { self.hideAllPanels("8"); } } else { if ( pop.hasClass('switchable') &amp;&amp; wrap.jqmData('switchable') ) { pop.css('display','block').removeClass("switched-hide"); self.panelWidth( true ); } else { self.hideAllPanels("8"); if ( pop.hasClass('ui-popover-center') ){ pop.css("left", (($(window).width() - pop.outerWidth()) / 2) + $(window).scrollLeft() + "px"); } pop.jqmData("fixed") == "top" ? pop.css( "top", $( window ).scrollTop() + "px" ) : pop.css( "bottom", wrap.outerHeight() - $( window ).scrollTop() - $.mobile.getScreenHeight() + "px" ); ...there's more } </code></pre> <p>Which I didn't like for the duplicate code in the first place. I'm now playing around with a chained version like so and am afraid I'm overdoing it:</p> <pre><code> wrap.filter(':jqmData(switchable="true")') .find( pop ) .filter('.switchable:visible') .css('display','none') .addClass("switched-hide") .end() .filter('.switchable:hidden') .css('display','block') .removeClass("switched-hide") .end() .queue(function(next){ self.panelWidth( true ) next(); }) .end() .end() // back to wrap .filter(':not(:jqmData(switchable="true")') .find( pop ) .queue(function(next){ self.hideAllPanels("8") next(); }) .filter('.ui-popover-center') .css("left", (($(window).width() - pop.outerWidth()) / 2) + $(window).scrollLeft() + "px") .end() .filter(':jqmData(fixed="top")') .css( "top", $( window ).scrollTop() + "px" ) .end() .filter(':jqmData(fixed="bottom")') .css( "bottom", wrap.outerHeight() - $( window ).scrollTop() - $.mobile.getScreenHeight() + "px" ) .end() ... </code></pre> <p><strong>Question</strong>:<br> Is there a point where chaining Jquery is turning negative for performance, especially if using queue() and filter() or should I just keep on going?</p> <p>Thanks for input!</p> <p>PS: Haven't tested the above. There are probably a few mistakes. I'm looking more for conceptual info.</p>
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