![]() ![]() If isPlaying is given a value when the object is created it will be false, alternatively you can pass in true to override it. Here’s an updated example with the isPlaying set to false: While this guarantees isPlaying is false, how about when I want to create an instance that’s playing immediately?ĮS6 introduces the concept of default values to any function or method call. In the previous example, I showed you how to write a class in ES6, where I set the isPlaying property to be false. However, it’s still prototypal underneath: ![]() JavaScript is a prototype-based object oriented language which means to describe something like a Song in a hypothetical playlist application we’d need to write something like this:ĮS6 has introduced a class syntax which looks like other languages. When you call the createPerson function it creates an object literal with the keys of firstName and lastName. Let’s see some of the main ES6 features you can use today using a transpiler and will be available in a browser near you soon! Object Literals Many developers have switched to ECMAScript 6 in development and use a transpiler, a ES6 source to ES5 source compiler, to publish their code to browsers and environments that don’t support ES6 features yet. They plan on doing smaller, yearly releases, so now’s a good time to get up to speed. An ever increasing amount of JavaScript developers have been preparing for ECMAScript’s launch, and soon it’ll be unavoidable. It’s also worth noting not all versions of ECMAScript will take this long to release. ECMAScript 6 has been in the works for some time now – it was first announced in 2008. The exciting thing is it’s been approved today by the standards body and that means broader browser support is coming. ECMAScript 6 or ES6 is the latest standardized version of JavaScript.
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