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POjavascript document.getElementsByClassName compatibility with IE
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  1. POjavascript document.getElementsByClassName compatibility with IE
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    copied!<h3>What is the best method to retrieve an array of elements that have a certain class?</h3> <p>I would use document.getElementsByClassName but IE does not support it.</p> <p>So I tried <a href="http://snook.ca/archives/javascript/your_favourite_1" rel="nofollow noreferrer">Jonathan Snook's solution</a>:</p> <pre><code>function getElementsByClassName(node, classname) { var a = []; var re = new RegExp('(^| )'+classname+'( |$)'); var els = node.getElementsByTagName("*"); for(var i=0,j=els.length; i&lt;j; i++) if(re.test(els[i].className))a.push(els[i]); return a; } var tabs = document.getElementsByClassName(document.body,'tab'); </code></pre> <p>...but IE still says:</p> <blockquote> <p>Object doesn't support this property or method</p> </blockquote> <p>Any ideas, better methods, bug fixes?</p> <p>I would prefer not to use any solutions involving jQuery or other "bulky javascript".</p> <h1>Update:</h1> <p>I got it to work!</p> <p>As <a href="https://stackoverflow.com/a/7410966/552067">@joe mentioned</a> the function is not a method of <code>document</code>.</p> <p>So the working code would look like this:</p> <pre><code>function getElementsByClassName(node, classname) { var a = []; var re = new RegExp('(^| )'+classname+'( |$)'); var els = node.getElementsByTagName("*"); for(var i=0,j=els.length; i&lt;j; i++) if(re.test(els[i].className))a.push(els[i]); return a; } var tabs = getElementsByClassName(document.body,'tab'); </code></pre> <p><br> ...Also <strong>if you only need IE8+ support</strong> then this will work:</p> <pre><code>if(!document.getElementsByClassName) { document.getElementsByClassName = function(className) { return this.querySelectorAll("." + className); }; Element.prototype.getElementsByClassName = document.getElementsByClassName; } </code></pre> <p>Use it just like normal:</p> <pre><code>var tabs = document.getElementsByClassName('tab'); </code></pre>
 

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