利用userAgent判断浏览器版本，（opera）浏览器尚未判别成功，愿给予帮助。

ScriptTao 2017-08-21 02:11:51



<!DOCTYPE html>

<html>

<head lang = 'en'>

    <meta http-equiv="x-UA-Compatible" content="Edge" >

    <meta http-equiv="content-type" content="text/html;charset=utf-8">

</head>

<body>

<script type="text/javascript">

function BrowserType(){  

    var userAgent = navigator.userAgent;                                                  //取得浏览器的userAgent字符串

    var isIE11 = userAgent.indexOf("Trident/7.0") > -1 && !isChrome;                      //判断是否IE的11浏览器

    var isEdge = userAgent.indexOf("Edge") > -1;                                          //判断是否IE的Edge浏览器

    var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera; //判断是否IE浏览器

    var isFF = userAgent.indexOf("Firefox") > -1;                                         //判断是否Firefox浏览器  

    var isSafari = userAgent.indexOf("Safari") > -1 && userAgent.indexOf("Chrome") == -1; //判断是否Safari浏览器  

    var isChrome = userAgent.indexOf("Chrome") > -1 && userAgent.indexOf("Safari") > -1;  //判断Chrome浏览器

    var isOpera = userAgent.indexOf("Opera") > -1;            //判断是否Opera浏览器

    if(isIE){  

        var reIE = new RegExp("MSIE (\\d+\\.\\d+);");  

        reIE.test(userAgent);  

        var fIEVersion = parseFloat(RegExp["$1"]);

        if(fIEVersion == 7.0){ 

        	alert("IE7");

        }else if(fIEVersion == 8.0){ 

           	alert("IE8");

        }else if(fIEVersion == 9.0){ 

           	alert("IE9");

        }else if(fIEVersion == 10.0){ 

           	alert("IE10");

        }  

    }else if (isIE11){

        alert("IE11");

    }else if (isEdge){  

    	alert("Edge");

    }else if (isOpera){  

    	alert("Opera");

    }else if (isSafari){  

    	alert("Safari");

    }else if (isFF){ 

    	alert("FF");

    }else if (isChrome){ 

    	alert("Chrome");

    }  

}

BrowserType();

</script>

</body>

</html>