Object-Oriented JavaScript — DOM Traversal

Object-Oriented JavaScript — DOM Traversal

We can traverse the DOM with various properties.

JavaScript is partly an object-oriented language.

To learn JavaScript, we got to learn the object-oriented parts of JavaScript.

In this article, we’ll look at the DOM.

Accessing DOM Nodes

We can access DOM nodes with built-in objects in the browser.

The document node gives us access to the current document.

We can see the properties of it with the console.dir method:


We can use the nodeType property to get the type of node.

ndoeName has the node’s name.

nodeValue has the value, which is the text for text nodes for example.



returns 9.

There’re 12 node types, which are represented by integers.

The most common is 1 for element, 2 attributes, and 3 for text.


returns '#document' .

And document.nodeValue is null .


The document.documentElement property gives us the HTML element.

The nodeType is 1 since it’s an element.

We can see that with:


We can get the nodeName with:


and get the tag name with:


They both return 'HTML' .

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