JavaScript Tutorial/Regular Expressions/URL

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Use regular expression to validate the URL

   <source lang="javascript">

<HTML> <HEAD> <SCRIPT language="JavaScript">

</SCRIPT> </HEAD> <BODY> <FORM name="myForm" action="#" onSubmit="return check_it();"> Enter URL:
<INPUT type="text" name="t1">
<INPUT type="submit" value="Submit"> </BODY> </HTML></source>