Question

我有这个javascript来检测浏览器，但它在IE9中不起作用。我找到了几个例子但是无法使用我的代码。有人可以告诉我，以便它可以在所有浏览器中工作，因为它是必需的。

<!doctype html>
<!--[if lt IE 7 ]> <html class="ie6"> <![endif]-->
<!--[if IE 7 ]>    <html class="ie7"> <![endif]-->
<!--[if IE 8 ]>    <html class="ie8"> <![endif]-->
<!--[if IE 9 ]>    <html class="ie9"> <![endif]-->
<!--[if (gt IE 9)|!(IE)]><!--> <html class=""> <!--<![endif]-->
<head>

的Javascript

var BrowserDetect = {
    init: function () {
            this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
            this.version = this.searchVersion(navigator.userAgent)
                    || this.searchVersion(navigator.appVersion)
                    || "an unknown version";
            this.OS = this.searchString(this.dataOS) || "an unknown OS";
    },
    searchString: function (data) {
            for (var i=0;i<data.length;i++) {
                    var dataString = data[i].string;
                    var dataProp = data[i].prop;
                    this.versionSearchString = data[i].versionSearch || data[i].identity;
                    if (dataString) {
                            if (dataString.indexOf(data[i].subString) != -1)
                                    return data[i].identity;
                    }
                    else if (dataProp)
                            return data[i].identity;
            }
    },
    searchVersion: function (dataString) {
            var index = dataString.indexOf(this.versionSearchString);
            if (index == -1) return;
            return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
    },
    dataBrowser: [
            {
                    string: navigator.userAgent,
                    subString: "Chrome",
                    identity: "Chrome"
            },
            {       string: navigator.userAgent,
                    subString: "OmniWeb",
                    versionSearch: "OmniWeb/",
                    identity: "OmniWeb"
            },
            {
                    string: navigator.vendor,
                    subString: "Apple",
                    identity: "Safari",
                    versionSearch: "Version"
            },
            {
                    prop: window.opera,
                    identity: "Opera",
                    versionSearch: "Version"
            },
            {
                    string: navigator.vendor,
                    subString: "iCab",
                    identity: "iCab"
            },
            {
                    string: navigator.vendor,
                    subString: "KDE",
                    identity: "Konqueror"
            },
            {
                    string: navigator.userAgent,
                    subString: "Firefox",
                    identity: "Firefox"
            },
            {
                    string: navigator.vendor,
                    subString: "Camino",
                    identity: "Camino"
            },
            {               // for newer Netscapes (6+)
                    string: navigator.userAgent,
                    subString: "Netscape",
                    identity: "Netscape"
            },
            {
                    string: navigator.userAgent,
                    subString: "MSIE",
                    identity: "Explorer",
                    versionSearch: "MSIE"
            },
            {
                    string: navigator.userAgent,
                    subString: "Gecko",
                    identity: "Mozilla",
                    versionSearch: "rv"
            },
            {               // for older Netscapes (4-)
                    string: navigator.userAgent,
                    subString: "Mozilla",
                    identity: "Netscape",
                    versionSearch: "Mozilla"
            }
    ],
    dataOS : [
            {
                    string: navigator.platform,
                    subString: "Win",
                    identity: "Windows"
            },
            {
                    string: navigator.platform,
                    subString: "Mac",
                    identity: "Mac"
            },
            {
                       string: navigator.userAgent,
                       subString: "iPhone",
                       identity: "iPhone/iPod"
        },
            {
                    string: navigator.platform,
                    subString: "Linux",
                    identity: "Linux"
            }
    ]

}; BrowserDetect.init（）;

Answer 1

公平地说，使用“userAgent”字符串不是一个好方法。最好检查浏览器是否支持功能，然后实现（或不实现）浏览器支持的站点的特定功能。

可以帮助您的一些网站是http://diveintohtml5.info/detect.html和http://modernizr.com/

Answer 2

检查添加到.ie9元素的<html>类。

已编辑使用hasClass代替length

if ($("html").hasClass("ie9")) {

}

Answer 3

轻松检测MSIE（v6 - v7 - v8 - v9 - v10 - v11）

if (navigator.userAgent.indexOf('MSIE') !== -1 || navigator.appVersion.indexOf('Trident/') > 0) {
   // MSIE
}

Answer 4

function runvlc(){
if (navigator.userAgent.toLowerCase().indexOf("msie")!==-1|| 
(navigator.appVersion.indexOf('Trident/') > 0)){
alert('iexplorer')
}
else if (navigator.userAgent.toLowerCase().indexOf("msie")==-1){
alert('others')
}
};

这个有效。

浏览器检测Internet Explorer

4 个答案: