Get a 1-dimension array of random elements from a 2-dimensions array

README.md

Get a 1-dimension array of random elements from a 2-dimensions array - JAVASCRIPT

Use:

var a = [[1,2,3],[4,5,6],[7,8,9]];
console.log(random(a, 4));

displays:

[4, 5, 6, 1]

random.js

window.random = function(rows, nbToReturn) {
	// group all sub arrays in a flat array
	return [].concat.apply([], rows)
		// randomize
		.sort(function(){return 0.5 - Math.random()})
		// takes the nbToReturn first
		.splice(0, nbToReturn);
};