Shuffle Arrays with Javascript

Working with random values in Javascript is like leaving in a cave. The only thing you can work with is Math.random() that returns a random number between 0 and 1. If you need a 0 to 10 value – multiply it by 10 (parseInt(Math.random()) or Match.floor(Math.random() * 10)) … That’s all random stuff you have in Javascript.

I needed a shuffling function to randomize one Array’s elements so the only thing was to build one:

 
// Add new property to javascript array object
Array.prototype.shuffle = function() {
	for (var j, x, i = this.length; i; j = parseInt(Math.random() * i), x = this[--i], this[i] = this[j], this[j] = x);
	return this;
};

Attache it to the Array prototype object so you can access it as object’s own method:

 
alert([1, 2, 3, 4, 5].shuffle());
alert(['one', 'two', 'three', 'four', 'five'].shuffle());

Do you have any other ideas or functions to improve the randomize process in Javascript?