Next, let's look at adding a function to our Person. Constructors are helpful for any object initialization logic. The new syntax gives us a dedicated constructor statement that runs on objectĬreation. So the ES2015/ES6 equivalent of our Person function constructor would be the following. If you have been following our lessons you have already been learning these new features because, well, ES6 is just JavaScript. It included many new features that make writing JavaScript much easier and cleaner. name ) // Outputs 'Bob'ĮS2015/ES6 has the new reserved keyword Class with a constructor statement. Put simply, ES6 is a version of JavaScript that was officially released in the summer of 2015. Before ES6, we used function constructors similar to this. In ES5 or the current widely supported version of JavaScript, we use prototypes to create object inheritance. If you are unfamiliar with prototypes I would suggest you read my previous post on JavaScript Prototypal Inheritance. Under the hood, ES6 Classes are still using prototypal inheritance. Something I cannot stress enough is the new Class is syntactic sugar on prototypes.

The new ES6 Class adds a new syntax on top of traditional prototypes. JavaScript has been a prototypal based language using object prototypes to create object inheritance and code reuse. This post I am going to cover the new Class syntax.

ES6 brings exciting features to JavaScript including new syntax improvements. This can be achieved with the help of default function parameters.ECMAScript 2015 or more well known as ES6 is the next specification for JavaScript. It may be handy to set a different value instead.

In JavaScript, the default value for function parameters is undefined. ECMAScript 6, or ES6, is the next version of JavaScript, and includes many enhancements and new features that make JavaScript coding easier and more.

One can write code in ES5 and gradually switch to ES6 features with ease.īelow is the list of top ES6 features every JavaScript developer should know, With Object-Oriented Classes, Arrow Functions, String Literals and much more, ES6 is a feature-rich advancement to ES5, the previous version of JavaScript, and is 100% backwards compatible. With a lot of forward-thinking features (ES6) attached to it, JavaScript is an exciting language to program.ĮS6 is the basis for modern programming languages like Angular and ReactJs. ES6 has many new features that can help a developer understand and write code more efficiently. ES6 is a new standardized version of javascript that was released in 2015.

What is es6 javascript