JavaScript----コンビネーションモード

var add = function(a, b) {

    return a + b;

};



var square = function(a) {

    return a * a;

};



var combine = function(fnA, fnB) {

    return function() {

        var args = Array.prototype.slice.call(arguments);

        var result = fnA.apply(null, args);

        return fnB.call(null, result);

    }

};



var addThenSquare = combine(add, square);



var result = addThenSquare(3, 5);

console.log(result); // 64