Dissecting the DOM

Fortunately, JavaScript gives us tons of ways to delve into the DOM and slice & dice it to suit our application’s needs. If you use a framework, such as jQuery, there are sometimes more methods. Today, I would like to look at two…


This method allows us to grab an HTML element based upon the element’s ID. Here is an example…

[code lang=”html”]
<div id="myDivID">
Some Content
var myDiv = document.getElementById("myDivID");

With the above method, as long as we have ID’d elements, we can grab any element we wish and then hold it in a variable to manipulate as we desire.


This method allows us to grab all elements of a certain type on an HTML page. Here is an example…

[code lang=”html”]
<img src="imageOne.png">
<img src="imageTwo.png">
var myImages = document.getElementsByTagName("img");

Similar to getElementById, this will allow us to grab all of the items we wish to from the page. In the aforementioned example, I am grabbing all of the image elements. This does differ from getElementById in that it can return multiple elements. It is important to note that it will store those results in an array. This allows for looping and utilizing array notation.

Happy Coding!

Clay Hess

More To Explore


Exploring the Broadcast Channel API: Inter-Tab Communication

Intercommunication between different contexts (like tabs, iframes or workers) of the same origin has often been a challenge. With the Broadcast Channel API, developers now have a powerful tool to easily communicate between browsing contexts. In this blog post, we’ll dive deep into the capabilities of the Broadcast Channel API, exploring its features, use cases, and how it can be effectively implemented in your projects.

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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.

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