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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 (this.readyState == 4 && this.status == 200) {
       myFunction(this);
   }
};
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