XML DOM replaceData() Method
Comment Object
Example
The following code fragment loads "books_comment.xml" into xmlDoc and replace "Simple" with "Easy" in the comment node of the first <book> element:
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (xhttp.readyState == 4 && xhttp.status == 200) {
myFunction(xhttp);
}
};
xhttp.open("GET", "books_comment.xml", true);
xhttp.send();
function myFunction(xml) {
var x, i, txt, xmlDoc;
xmlDoc = xml.responseXML;
txt = "";
x = xmlDoc.getElementsByTagName("book")[0].childNodes;
for (i = 0; i < x.length; i++) {
// Process only
comment nodes
if (x[i].nodeType
== 8) {
x[i].replaceData(4, 6, "Easy");
txt += x[i].data + "<br>";
}
}
document.getElementById("demo").innerHTML = txt;
}
Output:
125 Easy and Delicious Recipes (Hardcover)
Try it Yourself »
In the example above we use a loop and an if-test to make sure we only process comment nodes. A comment node has a node type of 8.
Definition and Usage
The replaceData() method replaces data in a comment node.
Syntax
commentNode.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 |
Comment Object
