The HTML DOM normalize() method removes empty Text Nodes, and joins adjacent Text Nodes from a specified node.
Following is the syntax −
Calling normalize()
document.normalize()
Let us see an example of normalize() method −
Example
<!DOCTYPE html>
<html>
<head>
<title>HTML DOM normalize()</title>
<style>
form {
width:70%;
margin: 0 auto;
text-align: center;
}
* {
padding: 2px;
margin:5px;
}
input[type="button"] {
border-radius: 10px;
}
</style>
</head>
<body>
<form>
<fieldset>
<legend>HTML-DOM-normalize( )</legend>
<input type="text" id="textSelect" placeholder="type here...">
<input type="button" onclick="makeTextNode()" value="Create Text Node">
<input type="button" onclick="normalizeDocument()" value="Normalize">
<div id="appendedNodes">All Text Nodes: </div>
<div id="divDisplay"></div>
</fieldset>
</form>
<script>
var divDisplay = document.getElementById("divDisplay");
var textSelect = document.getElementById("textSelect");
var appendedNodesDiv = document.getElementById("appendedNodes");
divDisplay.textContent = 'Total Text Nodes: '+appendedNodesDiv.childNodes.length;
function makeTextNode() {
var textNode = document.createTextNode(textSelect.value);
appendedNodesDiv.appendChild(textNode);
if(textSelect.value === '')
divDisplay.textContent = 'Empty Text Node Created';
else
divDisplay.textContent = 'Text Node Created with value: '+textSelect.value;
divDisplay.textContent += ', Total Text Nodes: '+appendedNodesDiv.childNodes.length;
}
function normalizeDocument() {
appendedNodesDiv.normalize();
divDisplay.textContent = 'Total Text Nodes: '+appendedNodesDiv.childNodes.length;
}
</script>
</body>
</html>Output
Before clicking any button −
After clicking ‘Create Text Node’ button with empty input −
After clicking ‘Create Text Node’ button with non-empty input −
After clicking ‘Normalize’ button −
After clicking ‘Normalize’ button −
