setinterval in javascript one seconds code example

Example 1: javascript setinterval

setInterval(function() {
  //Your code
}, 1000); //Every 1000ms = 1sec

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);