XML DOM length Property
Comment Object
Example
The following code fragment loads "books_comment.xml" into xmlDoc, gets the text node data and length from the first <title> 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, xmlDoc, txt;
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) {
txt += x[i].length + "<br>";
}
}
document.getElementById("demo").innerHTML = txt;
}
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, xmlDoc, txt;
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) {
txt += x[i].length + "<br>";
}
}
document.getElementById("demo").innerHTML = txt;
}
The output of the code above will be:
44
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 length property returns the length of the text in a comment node (in characters).
Syntax
commentNode.length
Comment Object
