<script type="text/javascript">
function userAgent(){
var ua = navigator.userAgent;
ua = ua.toLowerCase();
var match = /(webkit)[ \/]([\w.]+)/.exec(ua) ||
/(opera)(?:.*version)?[ \/]([\w.]+)/.exec(ua) ||
/(msie) ([\w.]+)/.exec(ua) ||
!/compatible/.test(ua) && /(mozilla)(?:.*? rv:([\w.]+))?/.exec(ua) ||
[]; //如果需要获取浏览器版本号:match[2]
alert(match);
switch (match[1]) {
case "msie": //ie
if (parseInt(match[2]) === 6) //ie6
document.body.innerHTML='IE6 '
else if (parseInt(match[2]) === 7) //ie7
alert("ie7");
else if (parseInt(match[2]) === 8) //ie8
alert("ie8"); break;
case "webkit": //safari or chrome
alert("safari or chrome"); break;
case "opera": //opera
alert("opera"); break;
case "mozilla": //Firefox
alert("Firefox"); break; default: break;
}
}
userAgent();
</script>