javascript 如何找出用户使用的浏览器？
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How can I find out which browser a user is using?
提问by
I would like to show a pop-up telling the user if their browser is outdated. How can I find out what browser they are using in javascript?
我想显示一个弹出窗口，告诉用户他们的浏览器是否已过时。如何找出他们在 javascript 中使用的浏览器？
采纳答案by Venkatesh Appala
function BrowserDetection() {
if (/Firefox[\/\s](\d+\.\d+)/.test(navigator.userAgent)) {
var ffversion = new Number(RegExp.) ;
}
else if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)) {
var ieversion = new Number(RegExp.);
}
else if (/Chrome[\/\s](\d+\.\d+)/.test(navigator.userAgent)) {
var chromeversion = new Number(RegExp.);
// capture x.x portion and store as a number
}
else if (/Opera[\/\s](\d+\.\d+)/.test(navigator.userAgent)) {
var oprversion = new Number(RegExp.)
}
else if (/Safari[\/\s](\d+\.\d+)/.test(navigator.userAgent)) {
var safariversion = new Number(RegExp.);
}
}
Then after finding the version, u will compare and display popup according to your need.
然后找到版本后，您将根据需要进行比较并显示弹出窗口。
回答by jmort253
回答by a paid nerd
Don't detect browsers, detect browser features. There's a good discussion on Stack Overflow already:
不要检测浏览器，检测浏览器功能。Stack Overflow 上已经有一个很好的讨论：
