const app = getApp(); import $ from "../../utils/request"; Component({ data: { }, lifetimes: { attached() { }, detached() { // 在组件实例被从页面节点树移除时执行 console.log('MyComponent detached!'); } }, // 组件的方法 methods: { bindOk() { this.triggerEvent('deviceEvent', { status: true }); } } });