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Validate A Url (regexp)

·

function isUrl(s) {
	var regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/
	return regexp.test(s);
}


usage: if (isUrl("http://www.page.com")) alert("is correct") 
       else alert("not correct");
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