HTMLElement.lang
HTMLElement.lang 屬性（property）可以讀取或設定一個表示元素之語系的標籤屬性（attribute）值。
HTMLElement.lang 屬性所回傳的語系代碼定義於網際網路工程任務小組（IETF）的 Tags for Identifying Languages (BCP47) 文件中。常見的例子如 "en" 代表英語、"ja" 代表日語、"es" 代表西班牙語等等。此標籤屬性的預設值為 unknown。請留意，雖然此標籤屬性於個別層級的元素上是有效的，但大部分都設定於文件的根元素。
HTMLElement.lang 屬性只對 lang 標籤屬性有作用，而不是 xml:lang。
語法
var languageUsed = elementNodeReference.lang; // Get the value of lang elementNodeReference.lang = NewLanguage; // Set new value for lang
languageUsed is a string variable that gets the language in which the text of the current element is written. NewLanguage is a string variable with its value setting the language in which the text of the current element is written.
範例
js
// this snippet compares the base language and
// redirects to another url based on language
if (document.documentElement.lang === "en") {
window.location.href = "Some_document.html.en";
} else if (document.documentElement.lang === "ru") {
window.location.href = "Some_document.html.ru";
}
規範
| Specification |
|---|
| HTML Standard # dom-lang |