HTMLElement.lang

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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

// 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 Status Comment
Document Object Model (DOM) Level 2 HTML Specification
The definition of 'lang' in that specification.
Obsolete