浏览器嗅探器（转）

Posted 2022-02-01 hyds

浏览器检测是在工作中经常用到的，如果只是简单判断当前是什么浏览器的话可以通过window.navigator.useragent这样的js来直接判断就可以了！

但是针对浏览器版本要求比较高的时候，如果只是单纯的判断浏览器的名字的话还不能解决问题，这时候就要通过其他方式来实现！现有的jquery已经废弃了$.browser的使用，所以在这里我介绍一个叫做"浏览器嗅探器"的程序来实现！

代码如下：（BrowserDetect.js）

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"
        ,
        
            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: "Internet 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();

使用方式如下：

 这个js兼容非常不错！使用起来比较简单，而且功能强大！