Programming languages all have built-in data structures, but these often differ from one language to another. This article attempts to list the built-in data structures available in JavaScript and what properties they have. These can be used to build other data structures.

The AsyncGenerator object is returned by an async generator function and it conforms to both the async iterable protocol and the async iterator protocol.

This chapter introduces JavaScript and discusses some of its fundamental concepts.

Iterators and Generators bring the concept of iteration directly into the core language and provide a mechanism for customizing the behavior of for...of loops.

JavaScript (JS) is a lightweight interpreted (or just-in-time compiled) programming language with first-class functions. While it is most well-known as the scripting language for Web pages, many non-browser environments also use it, such as Node.js, Apache CouchDB and Adobe Acrobat. JavaScript is a prototype-based, multi-paradigm, single-threaded, dynamic language, supporting object-oriented, imperative, and declarative (e.g. functional programming) styles.

The undefined global property represents the primitive value undefined. It is one of JavaScript's primitive types.

In this article, we examine how Scalable Vector Graphics (SVG) represents the positions and sizes of objects within a drawing context, including coordinate system and what a "pixel" measurement means in a scalable context.

The bitwise XOR assignment (^=) operator performs bitwise XOR on the two operands and assigns the result to the left operand.

The JavaScript reference serves as a repository of facts about the JavaScript language. The entire language is described here in detail. As you write JavaScript code, you'll refer to these pages often (thus the title "JavaScript reference").

The SVG <feDropShadow> filter primitive creates a drop shadow of the input image. It can only be used inside a <filter> element.