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                [TOC] ## Navigator ### Navigator.userAgent 瀏覽器的廠商和版本信息 ``` navigator.userAgent // "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.57 Safari/537.36" ``` ### Navigator.plugins 瀏覽器使用的插件 ### Navigator.platform 瀏覽器的平臺 ``` navigator.platform // "Linux x86_64" ``` ### Navigator.onLine 用戶是否在線 `navigator.onLine // true ` 訪問局域網時,返回true,并不能說明可以訪問互聯網,反之則成立 用戶**變成在線**會觸發online事件,**變成離線**會觸發offline事件 ``` window.addEventListener('offline', function(e) { console.log('offline'); }); window.addEventListener('online', function(e) { console.log('online'); }); ``` ### Navigator.language,Navigator.languages 表示瀏覽器的語言 `navigator.language // "en" ` `navigator.languages // ["en-US", "en", "zh-CN", "zh", "zh-TW"] ` ### Navigator.geolocation 對象 包含用戶地理位置信息 該 API 只有在 HTTPS 協議下可用 * Geolocation.getCurrentPosition():得到用戶的當前位置 * Geolocation.watchPosition():監聽用戶位置變化 * Geolocation.clearWatch():取消`watchPosition()`方法指定的監聽函數 ### Navigator.cookieEnabled 判斷cookie 功能是否打開
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