JavaScriptでapplyを使ってメソッド呼び出しする ref: http://qiita.com/items/2489

file0.txt

var add = function (a, b) {
    return a + b;
};
var array = [3, 4];
// first argument is "this"、second is parameters.
var sum = add.apply(null, array); //sum is 7