How to change placeholder after n seconds?

Question

JavaScript

There is an input with id "vvod" It is
necessary that every 3 seconds the placeholder changes from "Please enter" to "last name first name"

Answer 1

const placeholders = [ 'hello, world!!', 'fuck the world', 'fuck everything' ];
let index = -1;

setInterval(function() {
  index = (index + 1) % placeholders.length;
  document.querySelector('input').placeholder = placeholders[index];
}, 1000);