1. What you know about the history of QUnit?

QUnit was actually developed by John Resig as part of jQuery team in 2008, it got its own home, name and API the documentation, allowing others to use it for their own unit testing as well. At the time it still depended on jQuery. A rewrite in 2009 fixed all the issue and dependencies, and now QUnit runs completely standalone.

2. Which Browsers Support QUnit?

QUnit supports the all browsers as jQuery 1.x supporting like IE6+ and Current - 1 for Chrome, Firefox, Safari and Opera.

3. What is QUnit?

QUnit is a powerful new and very easy to use JavaScript unit testing framework. It is used by the jQuery, jQuery UI and jQuery Mobile projects and is capable of testing any generic JavaScript code, including itself.