javascript repeat function when no result code example

Example 1: repeat a function javascript

setInterval(function(){
  console.log("Hello");
  console.log("World");
}, 2000); //repeat every 2s

Example 2: js repeat

function repeatStr (n, s) {
  return s.repeat(n)
}
/////////////////////////////similar///////////////////////////////////////////
repeatStr = (n, s) => s.repeat(n);