In a function, normally you would use setTimeout() to delay a function. However, it will be kind of annoying when you need to use setTimeout() a number of times. For example:

function annoying(){
  setTimeout(function(){
    //code
    setTimeout(function(){
      //code
      setTimeout(function(){
        //code
      }, 3000)
    }, 3000)
  }, 3000)
}

So is there a simple function to delay it, like time.sleep in python?