javascript settimeout inside setinterval code example

Example 1: setinterval vs settimeout in javascript\

var intervalID = scope.setInterval(func, [delay, arg1, arg2, ...]);
var intervalID = scope.setInterval(function[, delay]);
var intervalID = scope.setInterval(code, [delay]);

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);