组件countdown.html代码
<div class="count-down"><div class="title"><h4>{{title}}</h4></div><div class="body"><div class="content"><div class="top">{{hour}}</div><div class="bottom">小时</div></div><div class="content"><div class="top">{{minute}}</div><div class="bottom">分钟</div></div><div class="content"><div class="top">{{second}}</div><div class="bottom">秒</div></div></div></div>组件countdown.scss代码
.count-down{width:100%;height:100px;background: rgba(0,0,0,0.5);padding: 2px 0;.body{margin-top: 8px;.content{width:29%;float: left;margin: 0 2%;.top{font-size: 20px;;line-height: 30px;color: black;background: white;border-bottom: 2px solid black;}.bottom{font-size: 14px;line-height: 20px;background: grey;}}}}组件countdown.component.ts代码
import { Component, OnInit, Input, OnDestroy, AfterViewInit } from "@angular/core";@Component({ selector: "roy-countdown", templateUrl: "./countdown.component.html", styleUrls: ["./countdown.component.scss"]})export class CountdownComponent implements AfterViewInit, OnDestroy { // 父组件传递截止日期 @Input() endDate: number; // 父组件传递标题 @Input() title: string; // 小时差 private hour: number; // 分钟差 private minute: number; // 秒数差 private second: number; // 时间差 private _diff: number; private get diff() {return this._diff; } private set diff(val) {this._diff = Math.floor(val / 1000);this.hour = Math.floor(this._diff / 3600);this.minute = Math.floor((this._diff % 3600) / 60);this.second = (this._diff % 3600) % 60; } // 定时器 private timer; // 每一秒更新时间差 ngAfterViewInit() {this.timer = setInterval(() => { this.diff = this.endDate - Date.now();}, 1000); } // 销毁组件时清除定时器 ngOnDestroy() {if (this.timer) { clearInterval(this.timer);} }}使用方法demo.html