The process of development, will inevitably be used to determine the version of the browser, usually we use the following Javascript to achieve, but also with reference to articles JE
JS to determine the type of browser (whether or not to use IE, Firefox, Opera browser)
If we hope to achieve with Rails, the
Rails to achieve determine types of browser
JS to determine the type of browser (whether or not to use IE, Firefox, Opera browser)
If we hope to achieve with Rails, the
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>QQ群 29032448 前端开发 </title>
<script type="text/javascript">
//----------------------------- 判断浏览器 -------------------------
function myBrowser(){
var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串
var isOpera = userAgent.indexOf("Opera") > -1; //判断是否Opera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 ; //判断是否Chrome浏览器
if(isIE){
var IE5 = IE55 = IE6 = IE7 = IE8 = false;
var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
reIE.test(userAgent);
var fIEVersion = parseFloat(RegExp["$1"]);
IE55 = fIEVersion == 5.5 ;
IE6 = fIEVersion == 6.0 ;
IE7 = fIEVersion == 7.0 ;
IE8 = fIEVersion == 8.0 ;
if(IE55){ return "IE55"; }
if(IE6){ return "IE6"; }
if(IE7){ return "IE7"; }
if(IE8){ return "IE8"; }
}
if(isFF){ return "FF"; }
if(isOpera){ return "Opera"; }
if(isSafari){ return "Safari"; }
if(isChrome){ return "Chrome"; }
} //myBrowser() end
window.onload=function(){
document.getElementById("ua").innerHTML=navigator.userAgent;
if(myBrowser()=="FF"){alert("我是 Firefox");}
if(myBrowser()=="Opera"){alert("我是 Opera");}
if(myBrowser()=="Safari"){alert("我是 Safari");}
if(myBrowser()=="Chrome"){alert("我是 Chrome");}
if(myBrowser().indexOf("IE")>-1){alert("我是 IE");}
if(myBrowser()=="IE55"){alert("我是 IE5.5");}
if(myBrowser()=="IE6"){alert("我是 IE6");}
if(myBrowser()=="IE7"){alert("我是 IE7");}
if(myBrowser()=="IE8"){alert("我是 IE8");}
}
</script>
</head>
<body>
<div></div>
</body>
</html> Rails to achieve determine types of browser
def client_browser_name
user_agent =
request.env['HTTP_USER_AGENT'].downcase
if user_agent =~ /msie/i
"Internet Explorer"
elsif user_agent =~ /konqueror/i
"Konqueror"
elsif user_agent =~ /gecko/i
"Mozilla"
elsif user_agent =~ /opera/i
"Opera"
elsif user_agent =~ /applewebkit/i
"Safari"
else
"Unknown"
end
end
def getBrowser(bt)
rs=false
ua=request.env['HTTP_USER_AGENT'].downcase
isOpera = ua.index('opera') ? true : false
isSafari = (ua =~ /webkit|khtml/) ? true : false
isSafari3 = (ua.index('webkit/5') ? true : false
isGecko = (!isSafari and ua.index('gecko')) ? true : false
isGecko3 = (!isSafari and ua.index('rv:1.9')) ? true : false
isIE = (!isOpera and ua.index('msie')) ? true : false
isIE7 = (!isOpera and ua.index('msie 7')) ? true : false
case bt
when 0 #isKonqueror
if ua.index('konqueror') then rs=true end
when 1 #isOpera
rs=isOpera
when 2 #isSafari
rs=isSafari
when 3 #isSafari2
rs=isSafari && !isSafari3
when 4 #isSafari3
rs=isSafari3
when 5 #isIE
rs=isIE
when 6 #isIE6
rs=isIE && !isIE7
when 7 #isIE7
rs=isIE7
when 8 #isGecko
rs=isGecko
when 9 #isGecko2
rs=isGecko && !isGecko3
when 10 #isGecko3
rs=isGecko3
when 11 #isWindows
if ua.index('windows') or ua.index('win32') then rs=true end
when 12 #isMac
if ua.index('macintosh') or ua.index('mac os x') then rs=true
end
when 13 #isAir
if ua.index('adobeair') then rs=true end
when 14 #isLinux
if ua.index('linux') then rs=true end
when 15 #isSecure
s = request.env['SERVER_PROTOCOL'].downcase
if s.index('https') then rs=true end
end
rs
end