JavaScript Fundamentals Before Learning React/

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Arrow Functions in React

Arrow Functions in React

This lesson demonstrates the uses of Arrow Functions in React.

We'll cover the following...

As mentioned in the previous lesson, Arrow Functions are a more concise way of writing a function in JavaScript. They are frequently used in React to make things more efficient and simpler (Event Handling, preventing bugs, etc.).

When teaching someone about React, I explain JavaScript arrow functions pretty early. They are one of JavaScript’s language additions in ES6 which pushed JavaScript forward in functional programming.

Javascript (babel-node)
// JavaScript ES5 function
function getGreetingFunc() {
  return 'Welcome to JavaScript';
}
// JavaScript ES6 arrow function with body
const getGreetingArrow1 = () => {
  return 'Welcome to JavaScript';
}
// JavaScript ES6 arrow function without body and implicit return
const getGreetingArrow2 = () =>
  'Welcome to JavaScript';
console.log(getGreetingFunc());
console.log(getGreetingArrow1());
console.log(getGreetingArrow2());

Given below is an example to help you understand ...