Navigator.language

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

Navigator.language 是一個唯讀的屬性，回傳使用者偏好的語言字串，通常是瀏覽器 UI 的文字

語法

js
const lang = navigator.language

值

一個 DOMString. lang 儲存一個代表此語言的字串。定義在BCP 47。範例: 合法的語言代碼 "en", "en-US", "fr", "fr-FR", "es-ES", etc.

在 iOS 小於 10.2 的 Safari 國碼是回傳小寫的喲！ "en-us", "fr-fr" etc.

範例

js
if (/^en\b/.test(navigator.language)) {
  doLangSelect(window.navigator.language);
}

規格

Specification
HTML Standard
# dom-navigator-language-dev

瀏覽器相容性

BCD tables only load in the browser

參見