Practicing TDD is a great way to get good quality software with satisfactory accuracy, even with fewer people. For web applications, JavaScript has become the most popular scripting language and it has become a challenge to test JavaScript code. Browser-based testing is actually a time killer and is difficult to follow for TDD, but then the solution to this comes with some cool tools that support automated testing for JavaScript. Most web application projects were limited to unit tests only, and without automated test tools, end-to-end tests or functional tests were almost impossible.
A lot of tools and frameworks focusing on JavaScript testing are coming out, which serve different solutions, making developers' lives easy. Besides inventing new JavaScript frameworks, the developer's community invented some tool sets to make testing easy. Like the Angular team, they come with cool tools like Karma. We also have the duplication of testing frameworks...