cs
Czech
Čeština
Indo-European
Language Code
ISO 639-1 Code
cs
Common Usage
HTML lang attribute
<html lang="cs">
HTTP Accept-Language Header
Accept-Language: cs
JavaScript/TypeScript
const language = "cs"; const languageName = "Czech";
ISO 639 Standard
ISO 639-1 is the international standard for language codes. These two-letter codes are used in HTML lang attributes, HTTP headers, and i18n/l10n systems. The code "cs" represents Czech (Čeština) and is part of the Indo-European language family.