HTML Audio/Video DOM timeupdate Event

//Accessing the element
var vid = document.getElementById("myVideo");

// Assign an ontimeupdate event to the video element, and execute a function if the current playback position has changed
vid.ontimeupdate = function() {myFunction()};

//Creating a function
function myFunction() {
  // Display the current position of the video in a p element with id="demo"
  document.getElementById("demo").innerHTML = vid.currentTime;
}

<element ontimeupdate="myScript">

object.ontimeupdate=function(){myScript};

object.addEventListener("timeupdate", myScript);