函数调用apply

var clicky = {
    wasClicked: function() {},
    addListeners: function() {
        var self = this;
        $('.clicky').click(function() {
            self.wasClicked();
        });
    }
};
clicky.addListeners();


//使用apply
var proxy = function(func, thisObject) {
        return (function() {
            return func.apply(thisObject, arguments);
        });
    };
var clicky = {
    wasClicked: function() {},
    addListeners: function() {
        var self = this;
        $('.clicky').click(proxy(this.wasClicked, this));
    }
};