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JavaScript Loop Constructs: A Comprehensive Comparison 1. Traditional Array Iteration Methods Basic for Loop const data = [10, 20, 30, 40, 50, 60, 70]; for (let i = 0; i < data.length; i++) { console.log(i, data[i]); } Optimized for Loop Cache the array length to improve performance, especially with large arrays: for (let j = 0, size = ...

The compact functon in Lodash filters out falsy values (false, null, 0, "", undefined, NaN) from an array and returns a new array containing only truthy elements. Its implementation is minimal yet deliberate—especially in how it iterates. Core Implementation Here's a refactored version of the logic, preserving correctness while renami ...