js判断浏览器

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

<script >

var userAgent = navigator.userAgent;

var isOpera = userAgent.indexOf("Opera") > -1;

var isMaxthon = userAgent.indexOf("Maxthon") > -1 ;

var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1 && !isOpera ;

var isFF = userAgent.indexOf("Firefox") > -1 ;

var isSafari = userAgent.indexOf("Safari") > -1 && userAgent.indexOf("Chrome") < 1 ;

var isChrome = userAgent.indexOf("Chrome") > -1 ;

var isIE5 = isIE55 = isIE6 = isIE7 = isIE8 = false;

 

if(isFF){document.write("当前浏览器是 Firefox");}

if(isMaxthon){document.write("当前浏览器是 傲游(webkit核心)");}

if(isOpera){document.write("当前浏览器是 Opera");}

if(isSafari){document.write("当前浏览器是 Safari");}

if(isChrome){document.write("当前浏览器是 Chrome");}

if(isIE){document.write("当前浏览器是 IE");}

</script>