what does setinterval return in javascript code example

Example 1: javascript setinterval

setInterval(function(){ 
	console.log("Oooo Yeaaa!");
}, 2000);//run this thang every 2 seconds

Example 2: js setinterval

function func(){
  console.log("Ran")
}
setInterval(func,1000)//Runs the "func" function every second

Example 3: javascript setinterval

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