ECMAScript 6 represents the biggest update to the core of JavaScript in the history of the language. In Understanding ECMAScript 6, expert developer Nicholas C. Zakas provides a complete guide to the object types, syntax, and other exciting changes that ECMAScript 6 brings to JavaScript. Every chapter is packed with example code that works in any JavaScript environment so you ll be able to see new features in action. You ll learn: How ECMAScript 6 class syntax relates to more familiar JavaScript concepts What makes iterators and generators useful How arrow functions differ from regular functions Ways to store data with sets, maps, and more The power of inheritance How to improve asynchronous programming with promises How modules change the way you organize code Whether you re a web developer or a Node.js developer, you ll find Understanding ECMAScript 6 indispensable on your journey from ECMAScript 5 to ECMAScript 6.