pause in a loop javascript code example

Example 1: js wait for time

function sleep(milliseconds) {
  const start = Date.now();
  while (Date.now() - start < milliseconds);
}

console.log("Hello");
sleep(2000);
console.log("World!");

Example 2: pause javascript

function wait(ms)
{
    var d = new Date();
    var d2 = null;
    do { d2 = new Date(); }
    while(d2-d < ms);
}