Javascript DOM HTML Node attributes Property

Introduction

The attributes property returns a collection of the specified node's attributes, as a NamedNodeMap object.

Find out how many attributes a <button> element have: 

var x = document.getElementById("myBtn").attributes.length;

Click the button to see how many attributes the button element have.

View in separate window 

<!DOCTYPE html>
<html>
<body>

<button id="myBtn" onclick="myFunction()">Test</button>

<p>The result should be 2 (the button element's id and onclick attributes).</p>

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

<script>
function myFunction() {//from   ww w.j  a  va 2  s .com
  var x = document.getElementById("myBtn").attributes.length;
  document.getElementById("demo").innerHTML = x;
}
</script>

</body>
</html>

The nodes can be accessed by index numbers, and the index starts at 0.

The attributes property returns a NamedNodeMap object representing a collection of node's attributes.




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