As a beginner exploring API testing, you might feel lost when deciding whether to use JavaScript testing frameworks or rely on Postman scripting. Both methods have their strengths, but it helps to understand what each approach offers and where each shines. What is API Testing? API testing ensures that your APIs (backend services) function correctly, returning expected results when provided with certain inputs. You want to confirm your endpoints are secure, accurate, and performant. Two Main Approaches Postman Scripting — Postman is a user-friendly tool for sending HTTP requests and checking responses. You can write scripts in Postman to automate API testing. JavaScript Testing Frameworks — JavaScript frameworks like Jest , Mocha , Chai , and Supertest offer more structured and flexible testing, integrated into your development pipeline. Now, let’s break down what , where , when , and why to use each appr...