[转]识别浏览器的类型和版本-优快云博客

本文链接：https://blog.youkuaiyun.com/iteye_2883/article/details/82062286

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript"> 
function init(){
	
var Sys = {}; 
var ua = navigator.userAgent.toLowerCase(); 
alert(ua);

if (window.ActiveXObject){
	Sys.ie = ua.match(/msie ([\d.]+)/)[1] 
}else if (document.getBoxObjectFor) {
	Sys.firefox = ua.match(/firefox\/([\d.]+)/)[1] 	
}else if (window.MessageEvent && !document.getBoxObjectFor) {
	Sys.chrome = ua.match(/chrome\/([\d.]+)/)[1] 	
}else if (window.opera) {
	Sys.opera = ua.match(/opera.([\d.]+)/)[1] 	
}else if (window.openDatabase) {
	Sys.safari = ua.match(/version\/([\d.]+)/)[1]; 
}

//以下进行测试 
if(Sys.ie) document.write('IE: '+Sys.ie); 
if(Sys.firefox) document.write('Firefox: '+Sys.firefox); 
if(Sys.chrome) document.write('Chrome: '+Sys.chrome); 
if(Sys.opera) document.write('Opera: '+Sys.opera); 
if(Sys.safari) document.write('Safari: '+Sys.safari); 

}
</script> 
</head>
<body οnlοad="init();">
</body>
</html>