套用curry

Function.prototype.method = function(name, func) {
    if (!this.prototype[name]) {
        this.prototype[name] = func;
    }
};

Function.method('curry', function() {
    var slice = Array.prototype.slice,
        args = slice.apply(arguments),
        that = this;
    return function() {
        return that.apply(null, args.concat(slice.apply(arguments)));
    };
});