For many years, people implemented the class design pattern on top of prototypesso-called prototypal inheritance (see You Don’t Know JS Yet: Get Started. By learning the basic building blocks of programming, as well as JavaScripts core mechanisms, youll be prepared to dive into the other, more in-depth. JavaScript is a powerful and flexible programming language. Armed with this knowledge, you can achieve true JavaScript mastery. JS is one of very few languages where you have the option to create objects directly and explicitly, without first defining their structure in a class. Like other books in this series, You Don't Know JS: ES6 & Beyond dives into trickier parts of the language that many JavaScript programmers either avoid or know nothing about.
With this book, you will: Learn new ES6 syntax that eases the pain points of common programming idioms Organize code with iterators, generators, modules, and classes Express async flow control with Promises combined with generators Use collections to work more efficiently with data in structured ways Leverage new API helpers, including Array, Object, Math, Number, and String Extend your program's capabilities through meta programming Preview features likely coming to JS beyond ES6 Consumer Long Text:No matter how much experience you have with JavaScript, odds are you don't fully understand the language.As part of the "You Don't Know JS" series, this compact guide focuses on new features available in ECMAScript 6 (ES6), the latest version of the standard upon which JavaScript is built. Armed with this knowledge, you can achieve true JavaScript mastery.
Like other books in this series, You Don't Know JS: ES6 & Beyond dives into trickier parts of the language that many JavaScript programmers either avoid or know nothing about. Edit: I guess this behavior is obvious after all I feel dumb now What really made it obvious to me is u/Jerp 's (and others') example of extracting the fill value into a variable first: const v const a new Array (3). As part of the "You Don't Know JS" series, this compact guide focuses on new features available in ECMAScript 6 (ES6), the latest version of the standard upon which JavaScript is built. Wes Bos has some great beginner courses: JavaScript 30 and Beginner JavaScript. No matter how much experience you have with JavaScript, odds are you don't fully understand the language. Reading random blogs and tutorials is a tough way to get oriented and make progress, so I really like learning things in an organized course structure.