Is it even?
For integer n, return a boolean: true if n is even, otherwise false. Zero and negative even integers also return true.
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Write and improve code
Write functions, fix bugs and test your solutions. Practice reading code and solving problems.
- Functions
- Debugging
- Tests
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Modify the code so it returns GRANTED instead of DENIED.
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An admin panel reads a product limit from an API. Return fallback only when value is null; the JS function should also handle undefined, which JSON fixtures cannot…
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How should you approach these challenges?
JavaScript coding exercises combine writing functions, fixing bugs and checking results with tests. They give you practice with small pieces of application logic, such as processing API data or working with arrays.
Start with the contract: what does the code accept and what should it return? Trace a simple example, implement a solution and run the tests. Check empty inputs, zero and boundary values too. If a test fails, compare the expected and actual results and fix the specific cause.
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