useragent

<script type="text/javascript">

var browser=navigator.appName

var b_version=navigator.appVersion

var version=parseFloat(b_version)

document.write("浏览器名称："+ browser)

document.write("<br />")

document.write("浏览器版本："+ version)

document.write("<p>浏览器：")

document.write(navigator.appName + "</p>")

document.write("<p>浏览器版本：")

document.write(navigator.appVersion + "</p>")

document.write("<p>代码：")

document.write(navigator.appCodeName + "</p>")

document.write("<p>平台：")

document.write(navigator.platform + "</p>")

document.write("<p>Cookies 启用：")

document.write(navigator.cookieEnabled + "</p>")

document.write("<p>浏览器的用户代理报头：")

document.write(navigator.userAgent + "</p>")

</script>