Transform onedim arrays into twodim..

arrayelzip.js

var a = [0,1,2,3,4],
    b = [5,6,7,8,9];
Array.prototype.zip = function (arr) {
    return this.map(function (e, i) {
        return [e, arr[i]];
    })
};
//Usage: a.zip(b) = [[0,5], [1,6], [2,7], [3,8], [4,9]]