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Determine attributes of css class via javascript

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Jul 04.2012

Hey everyone,

I assign a CSS class to a div element using javascript:

[CODE]page_div.setAttribute(“class”, page_class);[/CODE]

How can I access the different members of the CSS class (e.g. width, height) using JS?

I tried

[CODE]page_div.style.height[/CODE]

but unfortunately it says “undefined”

Looking forward to any advice

Steve

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JavaScript

2 Comments(s) ↴

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@vwphillipsJul 04.2012 — [CODE]<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

<head>
<title></title>
<style type="text/css">
/*<![CDATA[*/
.test {
height:400px;
background-Color:red;
}

/*]]>*/
</style></head>

<body>
<div class="test" id="tst" >1</div>

<script type="text/javascript">
/*<![CDATA[*/
function style(o,p){
if (o.currentStyle){
return o.currentStyle[p.replace(/-/g,'')];
}
return document.defaultView.getComputedStyle(o,null).getPropertyValue(p.toLowerCase());
}

alert(style(document.getElementById('tst'),'height'));
alert(style(document.getElementById('tst'),'background-Color'));

/*]]>*/
</script>


</body>

</html>[/CODE]
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@pro_ceed1authorJul 05.2012 — Problem solved.

Thanks a lot :-)
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