XML DOM createComment() Method
Document Object
Example
The following code fragment loads "books.xml" into xmlDoc and adds a comment node to the <book> element:
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (xhttp.readyState == 4 && xhttp.status == 200) {
myFunction(xhttp);
}
};
xhttp.open("GET", "books.xml", true);
xhttp.send();
function myFunction(xml) {
var x, i, newComment, xmlDoc, txt;
xmlDoc = xml.responseXML;
txt = "";
x = xmlDoc.getElementsByTagName("book");
for (i = 0; i < x.length; i++) {
newComment = xmlDoc.createComment("Revised April 2008");
x[i].appendChild(newComment);
}
for (i = 0; i < x.length; i++) {
txt += x[i].getElementsByTagName("title")[0].childNodes[0].nodeValue +
" - " +
x[i].lastChild.nodeValue + "<br>";
}
document.getElementById("demo").innerHTML = txt;
}
xhttp.onreadystatechange = function() {
if (xhttp.readyState == 4 && xhttp.status == 200) {
myFunction(xhttp);
}
};
xhttp.open("GET", "books.xml", true);
xhttp.send();
function myFunction(xml) {
var x, i, newComment, xmlDoc, txt;
xmlDoc = xml.responseXML;
txt = "";
x = xmlDoc.getElementsByTagName("book");
for (i = 0; i < x.length; i++) {
newComment = xmlDoc.createComment("Revised April 2008");
x[i].appendChild(newComment);
}
for (i = 0; i < x.length; i++) {
txt += x[i].getElementsByTagName("title")[0].childNodes[0].nodeValue +
" - " +
x[i].lastChild.nodeValue + "<br>";
}
document.getElementById("demo").innerHTML = txt;
}
The output of the code above will be:
Everyday Italian - Revised April 2008
Harry Potter - Revised April 2008
XQuery Kick Start - Revised April 2008
Learning XML - Revised April 2008
Try it Yourself »
Harry Potter - Revised April 2008
XQuery Kick Start - Revised April 2008
Learning XML - Revised April 2008
Definition and Usage
The createComment() method creates a comment node.
This method returns a Comment object.
Syntax
createComment(data)
| Parameter | Description |
|---|---|
| data | A string that specifies the data for the node |
Document Object
