JavaScript でブラウザの言語設定を取得

// Internet Explorer window.navigator.userLanguage // Firefox, Opera, 他 window.navigator.language // Internet Explorer, Opera, 他 window.navigator.browserLanguage var language = window.navigator.userLanguage || window.navigator.language || window.navigator.browserLanguage;

[hapilaki]

var language = (window.navigator.userLanguage || window.navigator.language || window.navigator.browserLanguage).substr(0,2) == "ja" ? "ja" : "en";