Individual skill

browser-javascript-tdd

Test-drive browser JavaScript behavior with DOM fixtures, test runners, smoke tests, onload timing, selector refactors, and integration tradeoffs with Selenium or end-to-end tests. Use when adding client-side behavior, debugging DOM tests, choosing between JS unit tests and browser functional tests, or making JavaScript testable without overusing Selenium.

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# Browser JavaScript TDD

Use this skill when browser-side behavior needs fast feedback before or alongside end-to-end tests. Keep JavaScript unit tests focused on DOM behavior and use broader browser tests only for integration confidence.

## Source Traceability

Primary source: Harry Percival, *Test-Driven Development with Python*, 3rd ed. Guidance is transformed and paraphrased from chapters 17, 25, and Appendix B, especially browser-based Jasmine tests, DOM fixtures, onload timing, selector refactoring, and JavaScript CI integration.

## Workflow

1. Start with the user-visible browser behavior.
   - Decide what the JavaScript owns: DOM update, class toggle, client-side validation, enhancement, or integration hook.
   - Keep server-owned state out of client unit tests.