how to set a non-async delay in javascript code example

Example 1: wait javascript

wait(ms) {
        return new Promise(resolve => setTimeout(resolve, ms));
 }

Example 2: sleeping in js

function sleep(milliseconds) {
  var start = new Date().getTime();
  for (var i = 0; i < 1e7; i++) {
    if ((new Date().getTime() - start) > milliseconds){
      break;
    }
  }
}

//using sleep()
sleep(2000); //sleep for 2 seconds