HTML | DOM normalize() Method

Last Updated : 25 Jul, 2019

The normalize() method in HTML is used to merge the adjacent text nodes with the first text node and flushes out the empty nodes. The normalize() method does not require any parameter.

Syntax:

node.normalize()

Example 1:

<!DOCTYPE html>
<html>
  
<head>
    <title>
        DOM normalize Method
    </title>
</head>
  
<body onload="normalizeNode()" 
      style="text-align:center">
  
    <h1>GeeksforGeeks</h1>
    <h2>DOM normalize() Method</h2>
  
    <button onclick="normalizeNode()">
        Normalize
    </button>
  
    <button onclick="addNode()">
        Add node
    </button>
    <p>There are <span id="count"></span> child nodes.</p>
  
    <script>
        // onload is used to reset the child text nodes
        // count when page is refreshed and addNode
        // function is used for addNode button
        function addNode() {
  
            // Creating a text node named "Normalize"
            var text_node = 
                document.createTextNode("Normalize ");
  
            // Using variable text_body to 
            //access the whole body
            var text_body = document.body;
  
            // Adding text node to the end of the body 
            text_body.appendChild(text_node);
  
            // Count is used to store number of child text
            // nodes present in the document
            var text_node = 
                document.getElementById("count");
  
            // innerHTML fetches value of text_node and 
            // update it with new value.
            text_node.innerHTML = 
              text_body.childNodes.length;
        }
  
        // normalizeNode function is used to Normalize button
        function normalizeNode() {
            document.normalize();
            var text_body = document.body;
            var node_count = 
                document.getElementById("count");
            node_count.innerHTML =
                  text_body.childNodes.length;
        }
    </script>
</body>
  
</html>