Coding | Notes | Jobs on Instagram: "📘 Understand these once… and 80% of JavaScript array problems become EASY! If you master these array methods, your logic & coding speed will level up instantly ⚡ Here are the essentials every JS developer must know: 🔹 push() – Add item at end 🔹 pop() – Remove last item 🔹 shift() – Remove first item 🔹 unshift() – Add item at beginning 🔹 map() – Transform each element 🔹 filter() – Keep only matching elements 🔹 reduce() – Convert array → single value 🔹