how to tell javascript to wait some time code example

Example 1: wait for time javascript

//code before the pause
setTimeout(function(){
    //do what you need here
}, 2000);

Example 2: js wait for time

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

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