Hello readers 👋, welcome to the 12th blog of this JavaScript series! This time we’re diving into a topic that looks simple but pops up everywhere, from real projects to technical interviews. We’re talking about Array Flattening in JavaScript . In real life, imagine you have a set of nested gift boxes. A big box contains smaller boxes, and inside those, even more boxes. If you want to see all the gifts at once, you open each box and lay everything out flat on the table. That’s exactly what we do with nested arrays, we flatten them into a single-level array. Let’s break it down step by step. What are nested arrays? A nested array is simply an array that contains other arrays as its elements. It can go multiple levels deep - arrays inside arrays inside arrays.…