Run Example

Edit This Code:
<!DOCTYPE html>
<html>
<body>

<h2>HTML ID Attribute in JavaScript</h2>

<h1 id="myHeader">JavaScript with HTML ID</h1>
<button onclick="jsFunction()">Change text</button>

<script>
function jsFunction() {
  document.getElementById("myHeader").innerHTML = "This is JS with ID!";
}
</script>

</body>
</html>
Result: