Check if a string starts with http using Javascript

Question

I\'ve been searching all over for an answer to this and all of the answers I\'ve found haven\'t been in JavaScript.

I need a way, in javascript, to check if a string sta

Answer 1

This should work:

var pattern = /^((http|https|ftp):\/\/)/;

if(!pattern.test(url)) {
    url = "http://" + url;
}

jsFiddle