angular2组件中定时刷新并清除定时器的实例讲解

import { Component,OnInit,ChangeDetectionStrategy,ChangeDetectorRef,OnDestroy} from "@angular/core";@Component({changeDetection:ChangeDetectionStrategy.OnPush})export class xxxComponent{private timer;constructor(private ref : ChangeDetectorRef){this.timer = setInterval(()=>{this.ref.detechChanges();//检测变化},5000)}//销毁组件时清除定时器ngOnDestroy(){if(this.timer){clearInterval(this.timer);}}}