santhosh17s

var arr = [27,30,23,20,22,25,29,24];

function absent( arr ) {
  
  var mia= [], min= Math.min.apply('',arr), max= Math.max.apply('',arr);
  
  while(min<max){
    if(arr.indexOf(++min)== -1) mia.push(min);
  }

santhosh17s

const sleep = (ms) => new Promise(resolve => setTimeout(resolve, ms));

async function sleepWork(){
   console.log("I'm going to sleep"); 
   await sleep(100);
   console.log("I wake up");
}
sleepWork();