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Optimization: Minimize look-ups in for loops.

['Ibrahim Diallo'] JavaScript iDiallo.com 2016-10-28 01:48:23

This was in 2009 so bear with me var allElements = document.getElementsByTagName("*"); var elements = new Array(); var className = "selected"; for(var i = 0; i < allElements.length;i++){ if (allElements[i].className.indexOf(className) != -1 ) { elements.push(allElements[i]); } } console.log(elements); // all elements with selected class name.

loop allelements elements classname currentelement length look variable javascript like

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