Arrow Functions

Arrow Functions, also known as fat arrow functions, are a shorthand syntax for defining functions in JavaScript. Introduced in ECMAScript 6 (ES6), they provide a more concise and readable way to write functions.

An arrow function is defined using the following syntax:

() => {  
  // function body
}

Arrow functions are called 'arrow' functions because they use an arrow (=>) instead of the traditional 'function' keyword to indicate the start of the function definition.

One of the main advantages of arrow functions is that they inherit the value of the 'this' keyword from the surrounding code, eliminating the need to use the 'bind' method or create a separate closure.

Arrow functions also have a more concise syntax for single-line functions. If the function body consists of only a single statement, the curly braces can be omitted:

() => statement;

Arrow functions are especially useful in scenarios where concise and readable code is desired, such as when working with arrays and higher-order functions like 'map', 'filter', and 'reduce'.