Aside from providing testing features, playgrounds can also come in handy for teams players to work in a code in real-time and even for teaching purposes since some of them have sharing options and built-in chat systems.
The playground also has a library section with option to add libraries and frameworks such as jQuery, Angular and Backbone. The code generated in the editor can be downloaded as a zip file.
2. JS Bin
Despite the good amount of options to explore with the console, the sharing options can be limited for team players. It is possible to send a link with the code output, but users can't collaborate with the project in real time.
As for the sharing options, you can send demos through Twitter, Facebook, Google + and SMS or join the Collab Mode, available for Pro Account subscribers.
4. JS Hint
One good thing is that the open source tool adjusts itself in any environment and guidelines you use in your code. Check out this page to see how to install different environments on the platform.
If you need help, just hit the Collaborate button on the top menu and invite friends to see and edit your code and chat via text or audio. Else if you just want to share your work, you can generate a link or even embed your code inside of a page.
One thing that can be annoying, though, is that JSFiddle doesn't update its preview screen automatically, so you need to hit the "Run" button each time you change your code. Another downside is that the playground doesn't bring a console, so perhaps this is not the ideal tool to scan code errors.
However, despite the clean interface, this tool brings interesting features to explore, such as frameworks you can add to the editor or even code samples.
With JSLint, you can make sure your code runs accordingly with the rules. This simple tool analyses the source code and allows the user to select what to tolerate or which standard to follow while scanning the code lines. Just paste the source you want to analyze, check the boxes with your criteria and hit "JSLint" button to obtain your results.
What are your favorite code playgrounds?
There are tons of code playgrounds on the web. Each one presents unique interfaces, features, and advantages, with the convenience of being a "page-loading" away from you.
Thus, in case you didn't have any of those tools in your bookmarks yet, it's time to check which ones are more convenient to you and keep some of these links easy for your access.