10 examples of '3 sec timer' in JavaScript

175
function startTimer(secs){
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   timeInSecs = parseInt(secs)-1;
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   ticker = setInterval("tick()",1000);   // every second
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}

131
(function timer() {
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  diff = that.duration - Math.floor((Date.now() - start) / 1000);
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  if (diff > 0) {
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    that.timeoutId = setTimeout(timer, that.granularity);
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    that.tick(diff);
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  } else {
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    that.running = false;
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    that.tick(0);
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    that.expire();
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  }
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}());

84
setSecondsTimer() {
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    this.secondsTimer = setInterval(() => {
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        setSeconds(getSeconds() - 1)
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        this.checkPoint()
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    }, 1000)
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}

36
private startTimer() {
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  this.el.classList.remove(`stopped`)
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  this.startTime = Date.now()
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  this.timerInterval = window.setInterval(() => {
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    const timeLeft = this.timeLeftMilliseconds()
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    if (timeLeft <= 0) {
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      this.stopTimer()
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      this.notifyCompletion()
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    } else {
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      this.displayTimeLeft(formattedTimeSeconds(timeLeft))
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    }
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  }, updateInterval)
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}

61
private startTimer() {
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  this.el.classList.remove(`stopped`)
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  this.startTime = Date.now()
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  this.timerInterval = window.setInterval(() => {
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    const timeLeft = this.timeLeftMilliseconds()
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    if (timeLeft <= 0) {
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      this.stopTimer()
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      this.notifyCompletion()
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    } else {
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      this.displayTimeLeft(formattedTimeSeconds(timeLeft))
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    }
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  }, updateIntervalMs)
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}

10
function createTimer(msec) {
11
  const queue = [];
12
  const timer = setInterval(() => {
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    while (0 < queue.length) {
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      const cb = queue.shift();
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      cb();
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    }
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  }, msec);
18
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  const producer = () => {
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    return new Promise((resolve, reject) => {
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      queue.push(resolve);
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    });
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  };
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  producer.clear = () => {
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    clearInterval(timer);
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  };
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  return producer;
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}

40
getTimerLeft () {
41
  if (this.running) {
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    this.stop()
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    this.start()
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  }
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  return this.remaining
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}

125
export async function timer(delayMs: number): Promise {
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    const start = Date.now();
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    await sleep(delayMs);
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    const end = Date.now();
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    return { start, end };
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}

33
_setTimeout(callback, time) {
34
  this._timer = setTimeout(() => {
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    callback()
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    this._finish = true
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    this._rest = null
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  }, time / this._rate)
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  this._finish = false
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  this._time = time
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  this._startTime = new Date()
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  this._callback = callback
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  this._rest = null
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}

18
function setTimer(timer, callback, interval) {
19
    timers[timer.id] = {
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        callback,
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        interval,
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        lastRun: gameTime
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    };
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}