Recently while I am trying to write a infinite loop with an interval like following in JavaScript, no sleep() function in JS.

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while(true){
	//dosomething()
    Thread.sleep(1000); //pause for 1 sec
}

So, to achieve the same goal, the approach in JavaScript is using setInterval(function, milliseconds)

Example

Show live time:

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    //output date and time string
    var dateTime = () => {
        var date = new Date();
        return date.toDateString()+' '+date.toLocaleTimeString();
    }
    
    //refresh each second
    setInterval(function(){
	$('#clock').text(dateTime()); 
}, 1000);

Other methods by Google

  1. Write a ‘sleep’ function 
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    const sleep = (milliseconds) => {
  return new Promise(resolve => setTimeout(resolve, milliseconds))
 }
  2. Use then 
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     sleep(500).then(() => {
 //do stuff
 })
  3. use asyn() 
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     const doSomething = async () => {
  		await sleep(2000)
  		//do stuff
 }
 doSomething()

Reference:

https://flaviocopes.com/javascript-sleep/