You’re used to declaring variables using var. Most of the code samples come with an external “Run this code” link, so that you can see the code and play with it. If you need to support old versions of browsers that lack many ES6 features, I’ll touch on solutions that might help you start using ES6 today. Please note that support for these new ECMAScript 6 features is well underway in modern browsers, although support varies. In this article, we’ll discuss a hand-picked selection of ES6 features that you can use in your everyday JavaScript coding. The features have varying degrees of complexity and are useful in both simple scripts and complex applications. It’s the next version of JavaScript, and it has some great new features. Promises are used to handle asynchronous tasks.You’ve probably heard about ECMAScript 6 (or ES6) already. For example, in home.js file: import contact from './contact.js' Then when you want to use the contact() function in another file, you can simply import the function. Class is similar to a constructor function. JavaScript class is used to create an object. To learn more about arrow functions, visit JavaScript Arrow Function.

For example,Ĭan be written as // function expression using arrow function In the ES6 version, you can use arrow functions to create function expressions. Once declared, you cannot change the value of a const variable. For example, // name declared with const cannot be changed The const statement is used to declare constants in JavaScript. For example, // variable declared using let This means they are only accessible within a particular block. The variables declared using let are block-scoped. To learn more about the difference between let and var, visit JavaScript let vs var. Previously, variables were declared using the var keyword. JavaScript let is used to declare variables. This tutorial provides a brief summary of commonly used features of ES6 so that you can start quickly in ES6. ECMAScript provides the specification on how JavaScript programming language should work. JavaScript ES6 (also known as ECMAScript 2015 or ECMAScript 6) is the newer version of JavaScript that was introduced in 2015.ĮCMAScript is the standard that JavaScript programming language uses.

What is es6