Arrow Functions in JavaScript (Beginner Friendly)

Arrow functions were introduced in ECMAScript 6 (ES6) to provide a shorter and cleaner way to write functions. Instead of using the function keyword, arrow functions use => . Normal Function vs Arrow Function Normal Function: function add ( a , b ) { return a + b ; } Arrow Function: const add = ( a , b ) => a + b ; Much cleaner! ✨ Single Parameter When there's only one parameter, you can skip the parentheses: const square = num => num * num ; square ( 5 ); // 25 Multiple Parameters For two or more parameters, wrap them in parentheses: const multiply = ( a , b ) => a * b ; Implicit Return Instead of writing: const add = ( a , b ) => { return a + b ; }; You can write: const add = ( a , b ) => a + b ; 💡 When the function body is a single expression, drop the curly braces and return keyword — the value is returned implicitly. Even or Odd Example Arrow functions shine in short, expressive one-liners: const isEven = num => num % 2 === 0 ; isEven ( 4 ); // true isEven ( 7 ); // false Arrow Fu