window.navigator
只读属性 Window.navigator
会返回一个 Navigator
对象的引用,可以用于请求运行当前代码的应用程序的相关信息。
语法
navigatorObject = window.navigator
例子
例子 #1:检测浏览器并返回浏览器名称字符串
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("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";
// "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("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("当前浏览器为:" + sBrowser);
例子 #2:检测浏览器并返回代表当前浏览器的索引数字
function getBrowserId () {
var aKeys = ["MSIE", "Firefox", "Safari", "Chrome", "Opera"],
sUsrAg = navigator.userAgent,
nIdx = aKeys.length - 1;
for (nIdx; nIdx > -1 && sUsrAg.indexOf(aKeys[nIdx]) === -1; nIdx--);
return nIdx;
}
console.log(getBrowserId());
规范
Specification |
---|
HTML Standard # dom-navigator |
浏览器兼容性
BCD tables only load in the browser