Window.navigator
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Window.navigator` は読み取り専用のプロパティで、スクリプトを実行しているアプリケーションに関するメソッドとプロパティを持つ Navigator オブジェクトへの参照を返します。
値
navigator オブジェクト。
例
例 #1: ブラウザーを検出し文字列で返す
js
var sBrowser,
sUsrAg = navigator.userAgent;
// The order matters here, and this may report false positives for unlisted browsers.
if (sUsrAg.indexOf("Firefox") > -1) {
sBrowser = "Mozilla Firefox";
// "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0"
} else if (sUsrAg.indexOf("SamsungBrowser") > -1) {
sBrowser = "Samsung Internet";
// "Mozilla/5.0 (Linux; Android 9; SAMSUNG SM-G955F Build/PPR1.180610.011) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/9.4 Chrome/67.0.3396.87 Mobile Safari/537.36
} else if (sUsrAg.indexOf("Opera") > -1 || sUsrAg.indexOf("OPR") > -1) {
sBrowser = "Opera";
// "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 OPR/57.0.3098.106"
} else if (sUsrAg.indexOf("Trident") > -1) {
sBrowser = "Microsoft Internet Explorer";
// "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; .NET4.0C; .NET4.0E; Zoom 3.6.0; wbx 1.0.0; rv:11.0) like Gecko"
} else if (sUsrAg.indexOf("Edge") > -1) {
sBrowser = "Microsoft Edge (Legacy)";
// "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36 Edge/16.16299"
} else if (sUsrAg.indexOf("Edg") > -1) {
sBrowser = "Microsoft Edge (Chromium)";
// Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36 Edg/91.0.864.64
} else if (sUsrAg.indexOf("Chrome") > -1) {
sBrowser = "Google Chrome or Chromium";
// "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/66.0.3359.181 Chrome/66.0.3359.181 Safari/537.36"
} else if (sUsrAg.indexOf("Safari") > -1) {
sBrowser = "Apple Safari";
// "Mozilla/5.0 (iPhone; CPU iPhone OS 11_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/11.0 Mobile/15E148 Safari/604.1 980x1306"
} else {
sBrowser = "unknown";
}
alert("You are using: " + sBrowser);
仕様書
| Specification |
|---|
| HTML Standard # dom-navigator |
ブラウザーの互換性
BCD tables only load in the browser