Free Debugging JavaScript Tools

A debugger in JavaScript is a very important tool as it ensures that the application will work as planned. It constantly monitors the application and immediately reports errors to the developer in order that actions will be implemented without causing too much inconvenience on the part of the user.

Of course, every developer in JavaScript and Ajax are already familiar with the Debug Toolkit from JavaScript and Firebug as two of the most powerful debugging tools for JavaScript. But if you’re looking for alternatives or simply would like to use another debugging tool, here are good, free options:

• Nitobibug

A very straightforward debugging tool specifically built for Ajax based applications. For that reason, users will be able to implement Ajax specific functions and expect them to be scrutinized by Nitobibug. Navigation and use of the application is also very easy as it provides an almost similar interface with Firebug. In fact, Nitobibug is also a browser based debugging tool. The online application can work with the latest models on four browsers: IE, Firefox, Opera and Safari. The unique feature of the application is that it’s a straightforward technique as it immediately alerts the developer in case a function is not developed according to specification.

• JSBin 

One of the highly interactive browser based debugging tool not only for JavaScript but also for HTML. Developers can simple copy and paste the functions and receive the output on a separate tab. The unique feature of the application is on its ability to be integrated with different libraries. From JQuery to YUI, developers can just select from the available libraries offered by JSBin. Although it’s quite limited, the library included and recognized by JSBin are some of the major libraries.

• Blackbird

A very interesting form of debugging tool as the tool aims to circumvent around the usual alert () function. Of course, only a handful of developers want to change their entire application just to make it run through debugger and remove them again.

Through blackbird, developers can use the basic codes and be prompted even without the alert () function. The interface is also very attractive and would run without any problem in different browsers. An API is also added for integration and customization by developers. However, a little bit of set-up is required on the developers end before it could be fully utilized. But if you’re willing to look beyond this step, this is a highly recommended debugger.

• Venkman

Consistently updated, Venkman debugger will be able to work well in debugging JavaScript and Ajax even when using older versions of browsers. The basic functions for debugging tools found in Firebug are also found in Venkman so learning about the debugger virtually takes no time.

These are some of the free debugging tools you can find online for JavaScript. Use them as much as possible to ensure your JavaScript and Ajax based application will work according to your preferences. It might be an extra step but ensuring your application to work makes it worth it.