js delay before exc function code example

Example 1: javascript wait 5 seconds

timeout(ms) { //pass a time in milliseconds to this function
    return new Promise(resolve => setTimeout(resolve, ms));
  }

Example 2: how to do a function after a set interval js

function sayHi() {
  alert('Hello');
}
//Do a function at a set interval continuously
setTimeout(sayHi, 1000);
//Do a function once after a set interval
setTimeout(sayHi, 1000);