Building Your Own Group Voice Calling Application Using the Agora Web SDK

Guided tutorial with code snippets.

Introduction

Love talking to your friends or colleagues but feel current applications aren’t living up to your expectations?
If you’re an enthusiastic developer like me, I bet you must be thinking of developing your own customizable group calling application!

Screenshot of the simple voice calling application we will be developing.
Screenshot of the simple voice calling application we will be developing.
Screenshot of the simple voice calling application we will be developing.

Prerequisites:

Project Setup

Let’s start by laying out our basic HTML structure. A few UI elements are necessary, such as the local audio stream uid, the remote audio streams’ uids, and buttons for joining, leaving, and muting and unmuting. I’ve also imported the necessary CDNs and linked the custom CSS and JS files.

Screenshot of our site with the above code.
Screenshot of our site with the above code.
Screenshot of our site with the above code.

Adding Color

Now that our basic layout is ready, it’s time to add some CSS.
I’ve already added basic Bootstrap classes to the HTML to make the site presentable, but we’ll use custom CSS to match the site with a blue Agora-based theme.

The magic of CSS.
The magic of CSS.
The magic of CSS.

Muting and Unmuting the Audio

Let’s add some functionality to our beautiful website. We will begin with the UI controls muting and unmuting the audio. A little JS here and a little JS there does the job:

Core Functionality (JS)

Now that we have the HTML/DOM structure laid out, we can add the JS, which uses the Agora Web SDK . It may look intimidating at first, but if you follow Agora’s official docs and demos and put in a little practice, it’ll be a piece of cake.

Conclusion

You did it!

We have successfully made our very own group voice calling application. In-case you weren’t coding along or want to see the finished product all together, I have uploaded all the code to GitHub:

Other Resources:

To learn more about Agora’s web SDK and other use cases, you can refer to the developer guide here.

Web Developer with keen interest in SEO & Digital Marketing.

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