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Prototype getWidth() Method

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This method finds and returns the computed width of element.

This method returns correct values on elements whose display is set to none either in an inline style rule or in an CSS stylesheet.

Note that the value returned is a number only although it is expressed in pixels.

Syntax:

element.getWidth();

Return Value:

Example:

<html>
<head>
<title>Prototype examples</title>
<script type="text/javascript" 
   src="/javascript/prototype.js">
</script>
<script>

function showResult(){
   var width = $('rectangle').getWidth();
   alert("Element width is " +  width );
}
</script>
</head>

<body>

   <p>Click the button to see the result.</p>

   <div id="rectangle" 
           style="font-size: 10px; width: 20em; height 10em">
        <p>This is the paragraph.</p>
   </div>

   <br />
   <input type="button" value="showResult" 
             onclick="showResult();"/>

</body>
</html>

To understand it in better way you can Try it yourself.


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