DOM HTMLCollection

HTMLCollection is a collection of HTML elements.

An HTMLCollection object is like an array list containing HTML elements.

The getElementsByTagName() method returns an HTMLCollection object.

Properties and Methods

The following table lists the properties and methods in the HTMLCollection object:

Property/Method	Description
item()	Returns the element at the specified index in the HTMLCollection.
length	Returns the number of elements in the HTMLCollection.
namedItem()	Returns the element in the HTMLCollection with the specified ID or name attribute.

Returns the collection of all p elements, which is an HTMLCollection object:

var x = document.getElementsByTagName("p");

Count the number of p elements in the document:

var x = document.getElementsByTagName("P");
document.write(x.length);

Loop through all elements in an HTMLCollection object:

var x = document.getElementsByTagName("P");
document.write(x.length);