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 (xhttp.readyState == 4 && xhttp.status == 200) {
myFunction(xhttp);
}
};
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;
}
xhttp.onreadystatechange = function() {
if (xhttp.readyState == 4 && xhttp.status == 200) {
myFunction(xhttp);
}
};
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
