Javascript DOM HTML Element getAttributeNode() Method get onclick event attribute of <button>

Introduction

Get the value of the onclick attribute node of a <button> element:

Click the button to display the value of the onclick attribute node of the button element.

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<!DOCTYPE html>
<html>
<body>
<button id="myBtn" onclick="myFunction()">Test</button>

<p id="demo"></p>

<script>
function myFunction() {//from  w  ww.  j a  va 2 s  . c  om
  var elmnt = document.getElementById("myBtn");
  var attr = elmnt.getAttributeNode("onclick").value;
  document.getElementById("demo").innerHTML = attr;
}
</script>

</body>
</html>

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