JavaScript Tutorial - Understanding Arrow Functions in 5 Easy Steps

JavaScript Tutorial - Understanding Arrow Functions in 5 Easy Steps

Walk 5 easy steps to understand arrow functions in JavaScript: syntax, shortening, this value, arguments, and limitations. In this tutorial, you'll understanding Arrow Functions in 5 Easy Steps

The usual way to define JavaScript functions is using the function declaration or function expression:

// Function declaration
function greet(who) {
  return `Hello, ${who}!`;
}

// Function expression
const greetExpression = function(who) {
  return `Hello, ${who}!`;
};

But functions can be further improved. Making the syntax shorter (useful for writing short callbacks) and ease the resolving of this created a new type of functions named arrow functions.

javascript arrow function function

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