jQuery获取浏览器类型和版本号的方法

var browser = navigator.appName;

var b_version = navigator.appVersion;

var version = b_version.split(";");

var trim_Version = version[1].replace(/[ ]/g, "");

if (browser == "Microsoft Internet Explorer" && trim_Version == "MSIE9.0") {

alert("IE9");

}