text: cc.Class({
      extends: cc.Component,
  
      properties: {
          // foo: {
          //    default: null,      // The default value will be used only when the component attaching
          //                           to a node for the first time
          //    url: cc.Texture2D,  // optional, default is typeof default
          //    serializable: true, // optional, default is true
          //    visible: true,      // optional, default is true
          //    displayName: 'Foo', // optional
          //    readonly: false,    // optional, default is false
          // },
          // ...
      },
  
      // use this for initialization
      onLoad: function () {
          var btn = this.node.getChildByName("btn_back");
          cc.vv.utils.addClickEvent(btn,this.node,"OnBack","onBtnClicked");        
      },
      
      onBtnClicked:function(event){
          if(event.target.name == "btn_back"){
              this.node.active = false;
          }
      }
  
      // called every frame, uncomment this function to activate update callback
      // update: function (dt) {
  
      // },
  });
  