Index

  1. Introduction To JavaScript
  2. Lexical Structure
  3. Types, Values And Variables
  4. Expressions And Operators
  5. Statements
  6. Objects
  7. Arrays
  8. Functions
  9. Classes
  10. Modules
  11. The JavaScript Standard Library
  12. Iterators And Generators
  13. Asynchronous JavaScript
  14. Metaprogramming
  15. JavaScript In Web Browsers
  16. Server-Side JavaScript With Node
  17. JavaScript Tools And Extensions

    Comments

    Post a Comment

    Viewed updates

    Chapter 1. Introduction to JavaScript

    Image
    JavaScript  is the programming language of the web. The overwhelming majority of websites use JavaScript, and all modern web browsers—on desktops, tablets, and phones—include JavaScript interpreters, making JavaScript the most-deployed programming language in history. Over the last decade, Node.js has enabled JavaScript programming outside of web browsers, and the dramatic success of Node means that JavaScript is now also the most-used programming language among software developers. Whether you’re starting from scratch or are already using JavaScript professionally, this book will help you master the language. If you are already familiar with other programming languages, it may help you to know that JavaScript is a high-level, dynamic, interpreted programming language that is well-suited to object-oriented and functional programming styles. JavaScript’s variables are untyped. Its syntax is loosely based on Java, but the languages are otherwise unrelated. JavaScript derives its firs...
    Read more

    Chapter 14. Metaprogramming

      This   chapter covers a number of advanced JavaScript features that are not commonly used in day-to-day programming but that may be valuable to programmers writing reusable libraries and of interest to anyone who wants to tinker with the details about how JavaScript objects behave. Many  of the features described here can loosely be described as “metaprogramming”: if regular programming is writing code to manipulate data, then metaprogramming is writing code to manipulate other code. In a dynamic language like JavaScript, the lines between programming and metaprogramming are blurry—even the simple ability to iterate over the properties of an object with a  for/in  loop might be considered “meta” by programmers accustomed to more static languages. The metaprogramming topics covered in this chapter include: §14.1  Controlling the enumerability, deleteability, and configurability of object properties §14.2  Controlling the extensibility of objects, and ...
    Read more