#The source RegExp property in JavaScript is a read-only string property of the RegExp object. It contains the text of the RegExp pattern. This text does not include the delimiting slash used in regular expression literals, nor does it include the "g", "i", and "m" attributes.
You can try running the following code to understand how to implement the source RegExp attribute in JavaScript -
<html>
<head>
<title>JavaScript RegExp source Property</title>
</head>
<body>
<script>
var str = "JavaScript is an interesting scripting language";
var re = new RegExp( "script", "g" );
re.test(str);
document.write("The regular expression is : " + re.source);
</script>
</body>
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