freeCodeCamp's Quality Assurance with JavaScript certification teaches testing: how to write unit tests, integration tests, and end-to-end tests for JavaScript applications. You use Chai (assertions), Mocha (test runner), and Selenium (browser automation). The course is completely free on freeCodeCamp.org, and you earn a certificate by completing five projects. After finishing, you can write automated tests and understand TDD (Test-Driven Development). The main limitation: testing culture varies by team. Some employers care deeply about it; others treat it as optional.
Companies that practice TDD (Test-Driven Development) ship 40-80% fewer bugs in production, according to research by IBM and Microsoft (source: IEEE research studies).
About This Course
Learn testing methodologies with JavaScript. Covers Chai testing library, Mocha, Helmet security, Passport.js authentication, and building a Node.js application with full test coverage. Free certificate.
Course Details
Frequently Asked Questions
Is this certification free?
Yes, completely free including the certificate.
Do I need JavaScript experience?
Yes. This assumes you know JavaScript. Do freeCodeCamp's JavaScript course first.
What tools does it teach?
Chai and Mocha for unit/integration testing, Selenium for end-to-end browser testing.
What's TDD?
Test-Driven Development: write the test first, then write the code to make it pass. It forces you to think about requirements before writing code.
Is QA a separate career path?
Yes. QA Engineer/SDET is a real role. Testing knowledge also makes you a better full-stack developer.
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