Angular2實(shí)現(xiàn)的秒表及改良版示例

export class Watches {
  id: number;
  str: string;
}
export let watcheList: Watches[] = [{
  id: 0, str: '123456'
}, {
  id: 1, str: '564822'
}]
//watchList 是一個(gè)靜態(tài)類(lèi)
watchList = watcheList;
watchStr: string;
//判斷是否是第一次點(diǎn)擊startWatch
num: number = 0;
//分 秒 毫秒
minute: number = 0;
second: number = 0;
millisecond: number = 0;
//臨時(shí)變量 存儲(chǔ)計(jì)次時(shí)的時(shí)間，后加入watcheList數(shù)組
temp= {
 id: 0,
 str: '0'
};
//定時(shí)器的名字
inter: any;
constructor() { }
 resetWatch() {
   //清零
  this.millisecond = 0;
  this.second = 0;
  this.minute = 0;
  this.temp.str = '000000';
  watcheList.length = 0;
 }
timer() {
  //每隔43ms，調(diào)用該函數(shù)，所以增加43
 this.millisecond = this.millisecond + 43;
 if (this.millisecond >= 1000) {
  this.millisecond = 0;
  this.second = this.second + 1;
 }
 if (this.second >= 60) {
  this.second = 0;
  this.minute = this.minute + 1;
 }
//當(dāng)小于10是，在前面加一個(gè)0，形式則變?yōu)?0:00:00
 this.watchStr = (this.minute > 10 ? this.minute : '0' + this.minute) + ':'
  + (this.second > 10 ? this.second : '0' + this.second) + ':'
  + (this.millisecond > 10 ? this.millisecond : '0' + this.millisecond);
}
 startWatch(event) {
  this.num = this.num + 1;
  if (this.num > 1) {
   //該狀態(tài)應(yīng)該為計(jì)次
   temp.id = this.watchList.length;
   temp.str = this.watchStr;
   this.watchList.push(temp);
  } else {
   this.inter = setInterval(() => {
    this.timer();
   }, 43);
  }
 }
 stopWatch(event) {
  this.num = 0;
  if (this.inter) {
   clearInterval(this.inter);
  }
 }
}

// 秒表
export class Watches {
  id: number;
  value: number;
}
export let watcheList: Watches[] = []
export class StopwatchComponent {
 //導(dǎo)入的靜態(tài)類(lèi)
 watchList = watcheList;
 //臨時(shí)變量，用來(lái)存貯計(jì)次時(shí)的時(shí)間
 temp: number;
 //判斷startWatch是第一次開(kāi)始，還是計(jì)次
 num: number = 0;
 //開(kāi)始時(shí)間
 startTime: number;
 //當(dāng)前時(shí)間
 nowTime: number;
 //時(shí)間差
 timerRunner: number = 0;
 //interval函數(shù)的名稱(chēng)
 inter: any;
 constructor() { }
 resetWatch() {
  //清零
  this.timerRunner = 0;
  this.watchList.length = 0;
 }
 startWatch(event) {
  this.temp = this.timerRunner;
  //開(kāi)始計(jì)時(shí)的時(shí)間
  this.startTime = Date.now();
  this.num = this.num + 1;
  if (this.num > 1) {
   //當(dāng)前狀態(tài)為計(jì)時(shí)，將計(jì)時(shí)的數(shù)據(jù)加入進(jìn)watchList
   let watchObj: Watches = {
    id: 0,
    value: 0
   }
   watchObj.id = this.watchList.length;
   watchObj.value = this.timerRunner;
   this.watchList.push(watchObj);
  } else {
   this.inter = setInterval(() => {
    this.nowTime = Date.now();
    this.timerRunner = this.temp + this.nowTime - this.startTime;
   }, 43);
  }
 }
 stopWatch(event) {
  this.num = 0;
  if (this.inter) {
   clearInterval(this.inter);
  }
 }
}