How would you code a custom reduce() function in JavaScript to aggregate values in an array using a callback?

Hard Difficulty

Hard questions require advanced understanding and critical thinking. Here, your problem-solving skills are key, as these questions often involve complex scenarios needing in-depth analysis and well-structured responses.

Javascript question

JavaScript questions test your proficiency with this versatile programming language. Demonstrate your understanding of language fundamentals, asynchronous programming, frameworks, and how you build dynamic web applications.

Here's a Hint

Focus on handling the accumulator, current value, and initial value parameters correctly while ensuring your implementation matches the native reduce() behavior.