Test-Driven Development for JavaScript

Writing JavaScript code that works is only the first step; ensuring it remains stable and maintainable as your application grows is where true software engineering begins. This text-based course guides you through the core principles of Test-Driven Development (TDD) to help you write robust, bug-free web applications. You will transition from writing ad-hoc scripts to crafting highly structured, self-documenting codebases that are easy to refactor. What you'll learn: Understand the foundational concepts of TDD and the red-green-refactor cycle; Write clean unit tests using modern JavaScript testing frameworks and assertions; Mock external dependencies, API calls, and modules to isolate your code; Implement modern JavaScript features such as async/await in asynchronous testing; Practice refactoring legacy code safely under the protection of a robust test suite; Structure your test files and organize code for optimal maintainability. Starting with essential testing terminology and foundational concepts, this course guides you step-by-step through practical testing patterns and real-world scenarios. It is designed specifically for beginner to intermediate JavaScript developers who want to adopt professional testing practices without any prior TDD experience. Start writing more predictable, professional, and resilient JavaScript today.