2025年3月6日 · 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 .

2025年3月6日 · JavaScript is a cross-platform, object-oriented scripting language used to make webpages interactive (e.g., having complex animations, clickable buttons, popup menus, etc.).

2025年1月27日 · The JavaScript Guide shows you how to use JavaScript and gives an overview of the language. If you need exhaustive information about a language feature, have a look at the JavaScript reference.

JavaScript is the programming language of the Web. JavaScript is easy to learn. This tutorial will teach you JavaScript from basic to advanced. With our "Try it Yourself" editor, you can edit the source code and view the result. We recommend reading …

6 天之前 · Modern JavaScript Tutorial: simple, but detailed explanations with examples and tasks, including: closures, document and events, object oriented programming and more.

MDN Web Docs is an open-source, collaborative project that documents web platform technologies, including CSS, HTML, JavaScript, and Web APIs. We also provide extensive 🧑‍🎓 learning resources for beginning developers and students.

A JavaScript Symbol is a primitive data type just like Number, String, or Boolean. It represents a unique "hidden" identifier that no other code can accidentally access. For instance, if different coders want to add a person.id property to a person object belonging to a third-party code, they could mix each others values.