Character encoding - MDN Web Docs Glossary: Definitions of Web-related terms 编辑

An encoding defines a mapping between bytes and text. A sequence of bytes allows for different textual interpretations. By specifying a particular encoding (such as UTF-8), we specify how the sequence of bytes is to be interpreted.

For example, in HTML we normally declare a character encoding of UTF-8, using the following line:

<meta charset="utf-8">

This ensures that you can use characters from just about any human language in your HTML document, and they will display reliably.

Learn more

General knowledge

• Character encoding on W3C
• Character encoding on Wikipedia