XML DOM replaceData() Method
 CDATA Object
 CDATA Object
Example
The following code fragment loads "books_cdata.xml" into xmlDoc and replace "Stunning" with "Fantastic" in the CDATA node of the first <html> element:
	var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
        if (xhttp.readyState == 4 && xhttp.status == 200) {
        
    myFunction(xhttp);
    }
};
xhttp.open("GET", "books_cdata.xml", true);
xhttp.send();
	
function myFunction(xml) {
           var xmlDoc = xml.responseXML;
    var x = 
	xmlDoc.getElementsByTagName("html")[0].childNodes[0];
    
	x.replaceData(3, 8, "Fantastic");
    
	document.getElementById("demo").innerHTML =
    x.data;
	
}
Output:
Fantastic!
Try it Yourself »
Definition and Usage
The replaceData() method replaces data in a CDATA node.
Syntax
CDATANode.replaceData(start,length,string)
| Parameter | Description | 
|---|---|
| start | Required. Specifies where to begin replacing characters. Start value starts at zero | 
| length | Required. Specifies how many characters to replace | 
| string | Required. Specifies the string to insert | 
 CDATA Object
 CDATA Object

