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XML DOM length Property

❮ NamedNodeMap Object

Example

The following code fragment loads "books.xml" into xmlDoc and gets the number of attributes in the first <book> element:

var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
   if (this.readyState == 4 && this.status == 200) {
       myFunction(this);
   }
};
xhttp.open("GET", "books.xml", true);
xhttp.send();

function myFunction(xml) {
    var xmlDoc = xml.responseXML;
    var x = xmlDoc.getElementsByTagName("book");
    document.getElementById("demo").innerHTML =
    "Number of attributes in the first book element: " +
    x.item(0).attributes.length;
}

The output of the code above will be:

Number of attributes in the first book element: 1
Try it Yourself »

Definition and Usage

The length property returns the number of nodes in a NamedNodeMap.

Syntax

nodemapObject.length

Try-It-Yourself Demos

length - Return the number of nodes in a node list

length - Loop through the nodes in a node list

❮ NamedNodeMap Object