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Javascript RegExp - exec Method
Description:
The exec method searches string for text that matches regexp. If it finds a match, it returns an array of results; otherwise, it returns null.
Syntax:
RegExpObject.exec( string );
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Here is the detail of parameters:
Return Value:
Returns the matched text if a match is found, and null if not.
Example:
<html>
<head>
<title>JavaScript RegExp exec Method</title>
</head>
<body>
<script type="text/javascript">
var str = "Javascript is an interesting scripting language";
var re = new RegExp( "script", "g" );
var result = re.exec(str);
document.write("Test 1 - returned value : " + result);
re = new RegExp( "pushing", "g" );
var result = re.exec(str);
document.write("<br />Test 2 - returned value : " + result);
</script>
</body>
</html>
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This will produce following result:
Test 1 - returned value : script
Test 2 - returned value : null
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To understand it in better way you can Try it yourself.
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