<ul data-eligibleForWebStory="false">Day 4 of the challenge focuses on mastering loops in JavaScript, a powerful tool for automating repetitive tasks.Three main loops in JavaScript are highlighted: for loop, while loop, and do...while loop, each serving different purposes.The concepts of break and continue within loops are explained, showcasing how they affect loop execution.A mini task is provided to print all even numbers from 1 to 50 using both for and while loops.