Search inside array

With this script we can search inside Array. This is not quite InDesign snippet and can be used in every Javascript. I really like approach to search problem, and want to share it with you. Script is not mine, I just found it on web long time ago.

Array.prototype.exists = function(search){
 for (var i=0; i<this.length; i++)
    if (this[i] == search) return true;
 return false;
}

var myA = Array("yes","no","today","monday");

alert(myA.exists("yes")); // true
alert(myA.exists("maybe")); // false

So, first five lines are function for searching. The prototype property allows you to add properties and methods to an object. Now, when we call ArrayName.exists(“some string”) search function will go through array and try to find match. If the match is function will return true, or if not, then false. We create sample Array called myA, and test it with last two lines.