I can't find a single reference that state that it's possible without involving the serverside.

MSDN上:

navigator.browserLanguage navigator.systemLanguage navigator.userLanguage

从browserLanguage:

In Microsoft Internet Explorer 4.0 and earlier, the browserLanguage property reflects the language of the installed browser's user interface. For example, if you install a Japanese version of Windows Internet Explorer on an English operating system, browserLanguage would be ja. In Internet Explorer 5 and later, however, the browserLanguage property reflects the language of the operating system regardless of the installed language version of Internet Explorer. However, if Microsoft Windows 2000 MultiLanguage version is installed, the browserLanguage property indicates the language set in the operating system's current menus and dialogs, as found in the Regional Options of the Control Panel. For example, if you install a Japanese version of Internet Explorer 5 on an English (United Kingdom) operating system, browserLanguage would be en-gb. If you install Windows 2000 MultiLanguage version and set the language of the menus and dialogs to French, browserLanguage would be fr, even though you have a Japanese version of Internet Explorer. Note This property does not indicate the language or languages set by the user in Language Preferences, located in the Internet Options dialog box.

此外，它看起来像是browserLanguage被弃用了，因为IE8没有列出它

Let lang = window.navigator.languages ?window.navigator。[0]: null; || window.navigator.language || window.navigator.browserLanguage || window.navigator.userLanguage; let shortLang = lang; if (shortLang.indexOf('-') !== -1) shortLang = shortLang.split('-')[0]; if (shortLang.indexOf('_') !== -1) shortLang = shortLang.split('_')[0]; console.log(朗,shortLang);

我只需要主组件来满足我的需要，但是您可以轻松地使用完整的字符串。适用于最新的Chrome, Firefox, Safari和IE10+。

导航器。用于IE的userLanguage

窗口.导航员.萤火虫/歌剧/safari语言

我有一个不同的方法，这可能会在未来帮助到一些人:

客户想要一个可以交换语言的页面。 我需要通过该设置格式化数字(不是浏览器设置/不是任何预定义的设置)

因此，我根据配置设置(i18n)设置了初始设置

$clang = $this->Session->read('Config.language');
echo "<script type='text/javascript'>var clang = '$clang'</script>";

后来在脚本中，我使用了一个函数来确定我需要的数字格式

function getLangsettings(){
  if(typeof clang === 'undefined') clang = navigator.language;
  //console.log(clang);
  switch(clang){
    case 'de':
    case 'de-de':
        return {precision : 2, thousand : ".", decimal : ","}
    case 'en':
    case 'en-gb':
    default:
        return {precision : 2, thousand : ",", decimal : "."}
  }
}

所以我使用了页面的设置语言，作为退步，我使用了浏览器设置。

这对测试也有帮助。

根据客户的不同，您可能不需要这些设置。

如果您不想依赖外部服务器，并且您有自己的服务器，您可以使用一个简单的PHP脚本来实现与@DanSingerman answer相同的行为。

languageDetector.php:

<?php
$lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
echo json_encode($lang);
?>

只需从jQuery脚本中更改这几行:

url: "languageDetector.php",
dataType: 'json',
success: function(language) {
    nowDoSomethingWithIt(language);
}

我一直在使用Hamid的答案一段时间，但在语言数组像["en"， "en- gb "， "en- us "， "fr- fr"， "fr"， "en- za "]的情况下，它将返回"en"，当"en- gb "将是一个更好的匹配。

我的更新(下面)将返回第一个长格式的代码，例如。"en-GB"，否则将返回第一个短代码，例如。"en"，否则返回null。

function getFirstBrowserLanguage() { var nav = window.navigator, browserLanguagePropertyKeys = ['language', 'browserLanguage', 'systemLanguage', 'userLanguage'], i, language, len, shortLanguage = null; // support for HTML 5.1 "navigator.languages" if (Array.isArray(nav.languages)) { for (i = 0; i < nav.languages.length; i++) { language = nav.languages[i]; len = language.length; if (!shortLanguage && len) { shortLanguage = language; } if (language && len>2) { return language; } } } // support for other well known properties in browsers for (i = 0; i < browserLanguagePropertyKeys.length; i++) { language = nav[browserLanguagePropertyKeys[i]]; //skip this loop iteration if property is null/undefined. IE11 fix. if (language == null) { continue; } len = language.length; if (!shortLanguage && len) { shortLanguage = language; } if (language && len > 2) { return language; } } return shortLanguage; } console.log(getFirstBrowserLanguage());

更新:当某些属性未定义时，IE11出现错误。增加了跳过这些属性的检查。