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plasticbottle on 03/14/18

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JavaScript IP validation


/ Published in: JavaScript
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JavaScript regex for validating IP addresses, has been tested!


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  1. function isValidIP(ip_str) {if(/^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/.test(ip_str)) {return true;} else return false;}

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