‘DOM’ino Effect

In today’s post, I would like to touch on the HTML DOM (Document Object Model). In building a web application, developers find themselves interacting with the DOM repeatedly. So what is the DOM?

The DOM at its most basic level is simply the pieces of the HTML page. There is terminology and methods associated with this interaction…

  • Tree – The DOM is sometimes referred to as a tree. This is because it is hierarchal in nature and each piece of the DOM is connected to the other. The concept of a DOM tree gives a very visual picture of the structure of the document.
  • Traversing the DOM – This is referencing moving around the DOM and interacting with each accordingly.
  • Nodes – Each piece of the DOM is called a node. So an HTML tag is called an element node. So a paragraph tag (<p>) would be referred to as a p element node. Text on the page is also referred to as a node, but in this case, it is called a text node.
  • DOM methods – The HTML DOM API has built in methods that allow interaction with the DOM. Here are a couple of examples:
    • getElementById(); – allows the grabbing of pieces of the DOM based upon the ID of the DOM node.
    • getElementsByTagName(); – allows the grabbing of pieces of the DOM based upon the node type. So a developer could grab all of the image tags (img) on a page. This returns the tags in an array data type.

In future posts, I will cover some more detailed DOM interactions, but one thing to keep in mind as you work with the DOM is how HTML works. For example, there are two main type of HTML elements…block and inline. The behavior of each of these can be altered by CSS, but it is important as a developer alters the DOM that they keep these aspects in mind.

Happy Coding!

Clay Hess

More To Explore

computer, laptop, work place-2982270.jpg

Unlocking Wireless Communication: A Dive into the Bluetooth API

Wireless communication has become an integral part of our daily lives, and Bluetooth technology is at the forefront of this revolution, enabling devices to exchange data over short distances and creating a world more interconnected than ever before. At the heart of this technology lies the Bluetooth Application Programming Interface (API), a powerful tool for developers looking to harness the capabilities of Bluetooth in their applications. In this blog post, we’ll explore what the Bluetooth API is, how it works, and the possibilities it opens up for innovation in wireless communication.

lighthouse, beacon, atlantic-8578318.jpg

Understanding the Beacon API: Simplifying Asynchronous Data Transfers

In today’s data-driven world, web applications often need to send data back to the server. Traditionally, this has been done using AJAX requests or similar methods. However, these techniques can come with a cost, especially when dealing with data that needs to be sent during the unload phase of a document, such as tracking and diagnostic data. This is where the Beacon API shines by allowing developers to send data to a server more reliably and efficiently.

Share This Post


Need help?

Let's have a chat...


Jump Back In!

Here at Webolution Designs, we love to learn. This includes sharing things we have learned with you. 


Begin Your Learning Journey Today!

Come back inside to continue your learning journey.