Partial application javascript

gistfile1.js

var partial = function(func) {
      return Function.prototype.bind.apply(func, arguments);
};



function add() {
    var x = 0;
    [].forEach.call(arguments, function(el) {
        x += el;
    }); 
    return x;
};

var addnew = partial(add, 5, 6, 7);
console.log(addnew(1)); // 19

What's really cool about this pattern is that it seems that you can apply partial to the returned function once again, so

    var addnew2 = partial(addnew, 2);
    console.log(addnew2(2)); // 22