js获取浏览器版本

function getOSAndBrowser(){
var os = navigator.platform;
var userAgent = navigator.userAgent;
console.log(userAgent);
var info = "";
var tempArray = "";
if(os.indexOf("Win") > -1){
if(userAgent.indexOf("Windows NT 5.0") > -1){
info += "Windows 2000";
}else if(userAgent.indexOf("Windows NT 5.1") > -1){
info += "Windows XP";
}else if(userAgent.indexOf("Windows NT 5.2") > -1){
info += "Windows 2003";
}else if(userAgent.indexOf("Windows NT 6.0") > -1){
info += "Windows Vista";
}else if(userAgent.indexOf("Windows NT 6.1") > -1 || userAgent.indexOf("Windows 7") > -1){
info += "Windows 7";
}else if(userAgent.indexOf("Windows NT 6.2") > -1 || userAgent.indexOf("Windows NT 6.3") > -1 || userAgent.indexOf("Windows 8") > -1){
info += "Windows 8";
}else if(userAgent.indexOf("Windows NT 6.4") > -1 ||userAgent.indexOf("Windows NT 10") > -1){
info += "Windows 10";
}else{
info += "Other";
}
}else if(os.indexOf("Mac") > -1){
info += "Mac";
}else if(os.indexOf("X11") > -1){
info += "Unix";
}else if(os.indexOf("Linux") > -1){
info += "Linux";
}else{
info += "Other";
}
info += "/";
if(/[Ff]irefox(\/\d+\.\d+)/.test(userAgent)){
tempArray = /([Ff]irefox)\/(\d+\.\d+)/.exec(userAgent);
info += tempArray[1] + tempArray[2];
}else if(/[Tt]rident(\/\d+\.\d+)/.test(userAgent)){
tempArray = /([Tt]rident)\/(\d+\.\d+)/.exec(userAgent);
if(tempArray[2] === "7.0"){
tempArray[2] = "11";
}else if(tempArray[2] === "6.0"){
tempArray[2] = "10";
}else if(tempArray[2] === "5.0"){
tempArray[2] = "9";
}else if(tempArray[2] === "4.0"){
tempArray[2] = "8";
}
tempArray[1] = "IE";
info += tempArray[1] + tempArray[2];
}else if(/[Cc]hrome\/\d+/.test(userAgent)){
tempArray = /([Cc]hrome)\/(\d+)/.exec(userAgent);
info += tempArray[1] + tempArray[2];
}else if(/[Vv]ersion\/\d+\.\d+\.\d+(\.\d)* *[Ss]afari/.test(userAgent)){
tempArray = /[Vv]ersion\/(\d+\.\d+\.\d+)(\.\d)* *([Ss]afari)/.exec(userAgent);
info += tempArray[3] + tempArray[1];
}else if(/[Oo]pera.+[Vv]ersion\/\d+\.\d+/.test(userAgent)){
tempArray = /([Oo]pera).+[Vv]ersion\/(\d+)\.\d+/.exec(userAgent);
info += tempArray[1] + tempArray[2];
}else{
info += "unknown";
}
return info;
};