🧠 Master JavaScript's map(), filter(), and reduce() Methods with Easy Examples!
🧠 Understanding map() , filter() & reduce() in JavaScript - Simplified! JavaScript offers powerful array methods to work with data efficiently. Among them, the trio of map() , filter() , and reduce() are must-know tools for every developer. This guide will break them down with simple examples that you can copy and run in your browser or code editor. 🔁 map() – Transform Every Element The map() method creates a new array by transforming each element of the original array. const numbers = [1, 2, 3, 4]; const doubled = numbers.map(num => num * 2); console.log(doubled); // Output: [2, 4, 6, 8] 💡 Use map() when you want to apply a function to each item and return a new array. 🔍 filter() – Keep What You Need The filter() method returns a new array containing elements that match a condition. const numbers = [1, 2, 3, 4, 5]; const even = numbers.filter(num => num % 2 === 0); console.log(even); // Output: [2, 4] 💡 Use fil...