Client-side monitoring with browser development tools

There was a time when we had to install different extensions to use development tools in different browsers. Now, development tools have become the norm in the latest versions of all modern browsers. These tools provide a wide range of facilities to debug your code. The following screenshot previews the developer tools section of the Chrome browser:

The preceding screenshot previews the Console tab, where you will see errors, notices, and information related to user requests. This tab simplifies the process of tracking and fixing errors in your client-side coding. We can also use other tabs such as Sources, Network, Performance, Security to track AJAX requests, file loading precedence, memory, and bandwidth usage, along with possible security risks.

"AJAX is a short term for Asynchronous JavaScript and XML. AJAX is a set of web development techniques using many web technologies on the client side to create asynchronous web applications. With Ajax, web applications can send and retrieve data from a server asynchronously (in the background) without interfering with the display and behavior of the existing page."
– Wikipedia

Other browsers provide built-in development tools with similar features. The Firefox browser consists of Inspector,Console, Debugger, Style Editor, Performance, Memory, Network, and Storage tabs. Internet Explorer consists of DOM Explorer, Console, Debugger, Network, UI Responsiveness, Profiler, and Memory tabs. The main feature set is consistent across all browsers. As a developer, you should use browser tools at least for simple tasks, such as monitoring errors, inspecting HTML tags, tracking AJAX requests, and testing CSS styles.