cc.Button

    // use this for initialization
    onLoad: function () {
        // 获取button组件
        this.start_button = this.node.getChildByName("ks_up").getComponent(cc.Button); 


        // 添加button组件
        this.red_button = this.node.getChildByName("red_button").addComponent(cc.Button);
        // 添加一个响应函数
        var click_event = new cc.Component.EventHandler();
        click_event.target = this.node;
        click_event.component = "game_scene";
        click_event.handler = "on_red_button_click";
        click_event.customEventData = "red_button_data_77777";
        // this.red_button.clickEvents = [click_event];
        this.red_button.clickEvents.push(click_event);
        
        // end 

        // 代码触发按钮的响应事件，而不用自己去触摸
        this.scheduleOnce(function() {
            var click_events = this.red_button.clickEvents;
            for(var i = 0; i < click_events.length; i ++) {
                var comp_env_handle = click_events[i];
                // 在代码里面触发按钮的响应函数
                comp_env_handle.emit(["", "red_button_data_6666"]);
            }
        }.bind(this), 3);
        // end 
    },

    on_red_button_click: function(e, custom) {
        console.log("on_red_button_click: ", custom);
    },
    // 关卡按钮1-10, 第几关
    //  e 本次触摸的触摸事件
    // customEventData is String;
    on_button_click: function(e, level) {
        //level = parseInt(level);
        console.log("on_button_click called:", level);
    },
    btn1_click: function () {
        console.log("this is button click ");
    },