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You’ve learned how to write a function… now let’s make sure it works. 🫧

Practice real coding challenges with JavaScript functions – right in your browser, with interactive scrims from Scrimba.

🧠 Write, run, and debug your way to mastery
developer.mozilla.org/en-US/do

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Test your skills: Functions - Learn web development | MDN

The aim of this skill test is to help you assess whether you've understood our Functions — reusable blocks of code, Build your own function, and Function return values articles.

developer.mozilla.org · MDN Web Docs

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