Over the years, Web Browser capabilities have ever increased due to the demands coming from web applications. As a result, we can find multiple ways of achieving similar functionality. One such feature we rarely look at is the ability to communicate across Browser Tabs. Let’s look at a few scenarios where you need this.

• Changing theme (e.g., Dark or Light theme) of the application propagates across the already opened Browser Tabs.
• Retrieve the latest token for authentication and share it across Browser Tabs.
• Synchronize the application state across Browser Tabs.

At the moment of writing this article, there were several approaches we can consider to communicate across Browsers. However, each method has its strengths and weaknesses. Therefore, I will discuss them in detail so that you can find the best one applicable to your use case.

#communication #realtime #javascript