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Check if a string is a valid URL (very basic) -- see http://jsfiddle.net/nabil_kadimi/ftx9196o/
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/** | |
* @author Nabil Kadimi (nabil * at * kadimi * com) | |
* @link http://jsfiddle.net/nabil_kadimi/ftx9196o/ | |
*/ | |
function isURL( url ) { | |
var pattern = new RegExp('^(https?:\\/\\/)?' // protocol | |
+ '((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|' // domain name | |
+ '((\\d{1,3}\\.){3}\\d{1,3}))' // OR ip (v4) address | |
+ '(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*' // port and path | |
+ '(\\?[;&a-z\\d%_.~+=-]*)?' // query string | |
+ '(\\#[-a-z\\d_]*)?$','i' // fragment locator | |
); | |
return pattern.test( url ); | |
} |
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