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JavaScript for Testers: Articles

JavaScript and TypeScript power Playwright, Cypress and many API test suites. These articles focus on the language features that cause the most trouble in test code, especially asynchronous behaviour, and link to coding challenges that run your solution against real tests.

1 article

JavaScript for Testers

Async JavaScript for Testers: Promises, await and the Event Loop in Your Tests

The async JavaScript bugs that break test suites: forEach with await, missing awaits on Playwright assertions, Promise.all misuse and how the event loop orders work.

3 Nov 2026 · 9 min read

JavaScript for Testers: Articles

Async JavaScript for Testers: Promises, await and the Event Loop in Your Tests