langBaseline · Widely available
The lang global HTML attribute defines the language of an element. It's used by assistive technology to correctly read the content, translation tools to select the origin language, and other applications.
Supported in all major browsers for at least 30 months — safe to use without fallbacks. Baseline since Jul 29, 2015. Widely available since Jan 29, 2018.
Browser support
DesktopChrome
1+Supportedsince Dec 11, 2008
Current: 155Edge
12+Supportedsince Jul 29, 2015
Current: 154Firefox
1+Supportedsince Nov 9, 2004
Current: 157Safari
1–3.1Not supported
≤4+Supportedsince Jun 8, 2009
Current: 27MobileChrome Android
18+Supportedsince Jun 27, 2012
Current: 155Firefox Android
4+Supportedsince Mar 29, 2011
Current: 157Safari iOS
1–3Not supported
≤3.2+Supportedsince Apr 3, 2010
Current: 27How to use
This feature is Baseline widely available — use it freely, no fallback needed.
Example
Full syntax and examples are on MDN: lang.
Feature detection
JS · check before using
if ("lang" in HTMLElement.prototype) {
// the lang attribute is supported
}Specification
Sub-features
Support for each part of the feature (2). The overall table above shows when the whole feature works.
| Sub-feature | Chrome | Edge | Firefox | Safari | Chrome Android | Firefox Android | Safari iOS |
|---|---|---|---|---|---|---|---|
| HTMLElement.lang | 1 | 12 | 1 | 3 | 18 | 4 | 1 |
| lang | 1 | 12 | 1 | ≤4 | 18 | 4 | ≤3.2 |