vue2.0组件的生命周期

 beforeCreate(){
      console.log(new Date().getTime())
      let data = this.text;
      console.log('组件创立之前')
      console.log('beforeCreate', data ? "数据获取成功" : '数据获取失败');
      console.log('beforeCreate', $('.study').length ? "dom获取成功" : 'dom获取失败');
    },
    created(){
      console.log(new Date().getTime())
      console.log('组件实例创建完成')
      let data = this.text;
      console.log('created', data ? "数据获取成功" : '数据获取失败');
      console.log('created', $('.study').length ? " dom获取成功" : 'dom获取失败');
      //初次加载时不在 数据改变再次渲染是dom存在
    },
    beforeMount(){
      console.log(new Date().getTime())
      console.log('组件编译挂载之前')
      let data = this.text;
      console.log('beforeMount', data ? "数据获取成功" : '数据获取失败');
      console.log('beforeMount', $('.study').length ? "dom获取成功" : 'dom获取失败');
//      console.log($ele.demo)

    },
    mounted(){
      console.log(new Date().getTime())
      console.log('组件编译挂载之后')
      let data = this.text;
      console.log('mounted', data ? "数据获取成功" : '数据获取失败');
      console.log('mounted', $('.study').length ? "dom获取成功" : 'dom获取失败');

    },
    beforeUpdate(){
      console.log(new Date().getTime())
      console.log('组件更新之前')
      let data = this.text;
      console.log('beforeUpdate', data ? "数据获取成功" : '数据获取失败');
      console.log('beforeUpdate', $('.study').length ? "dom获取成功" : 'dom获取失败');
    },
    updated(){
      console.log(new Date().getTime())
      console.log('组件更新之后')
      let data = this.text;
      console.log('updated', data ? "数据获取成功" : '数据获取失败');
      console.log('updated', $('.study').length ? "dom获取成功" : 'dom获取失败');
    },
    activated(){
//        跳路由的时候
      /*写于当前组件内*/
      console.log('组件激活时调用')
    },
    deactivated(){
      console.log('组件被移除时调用')
    },