JavaScript: Core Programming Concepts Assessment

Online assessment to evaluate basic JavaScript programming skills

This beginner-level assessment evaluates a candidate’s understanding of essential JavaScript programming concepts required for everyday coding tasks. It includes topics such as arithmetic operations, array manipulation, string reversal, recursion fundamentals, loop behavior, condition checks, search logic, and Big-O awareness. Designed for beginners and aspiring developers, this assessment helps determine how well a candidate can apply core logic and programming patterns when solving simple JavaScript challenges.

Sample Question

You need to "Flatten" a nested array structure [[1, 2], [3, 4]] into a single level [1, 2, 3, 4]. Which modern ES6+ method achieves this most efficiently?