validating internet address in javascript [duplicate]

This question already has answers here: Closed 12 years ago. 开发者_运维百科

Possible Duplicate:

how can i validate a url in javascript using regular expression

I want to validate whether user input a valid internet adress like www.hotmail.com http://www.abc.com.pk

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Here's the js function:

function validateString(regexPattern, testString) {
 var regexObj = new RegExp(regexPattern);
 return regexObj.test(testString);
}

Finding the regex for URLs is just a matter of typing it in google. Here's a good one I've used before.