(Cross-browser basic events/browser detection/judgment of browsers) experience code sharing _ javascript skills

Some js Code, spare by yourself, master do not laugh at me. (Cross-browser basic events, browser detection, and judgment of the browser name, version number, and operating system) are very practical and convenient for your use. Interested friends can understand, I hope this article will help you. Cross-browser basic events

The Code is as follows:

// Add events across browsers
Function addEvent (obj, type, fn ){
If (obj. addEventListener ){
Obj. addEventListener (type, fn, false );
} Else if (obj. attachEvent ){
Obj. attachEvent ('on' + type, function (){
Fn. call (obj );
});
}
}
// Cross-browser basic events
Function removeEvent (obj, type, fn ){
If (obj. removeEventListener ){
Obj. removeEventListener (type, fn, false );
} Else if (obj. detachEvent ){
Obj. detachEvent ('on' + type, fn );
}
}
// Block default actions across browsers
Function preDef (evt ){
Var e = evt | window. event;
If (e. preventDefault ){
E. preventDefault ();
} Else {
E. returnValue = false;
}
}
// Cross-browser retrieval of target objects
Function getTarget (evt ){
If (evt.tar get) {// W3C
Return evt.tar get;
} Else if (window. event. srcElement) {// IE
Return window. event. srcElement;
}
}
// Cross-browser character encoding
Function getCharCode (evt ){
Var e = evt | window. event;
If (typeof e. charCode = 'number '){
Return e. charCode;
} Else {
Return e. keyCode;
}
}

Browser Detection

The Code is as follows:

Var client = function (){
// Rendering engines
Var engine = {
Ie: 0,
Gecko: 0,
Webkit: 0,
Khtml: 0,
Opera: 0,
// Complete version
Ver: null
};
// Browsers
Var browser = {
// Browsers
Ie: 0,
Firefox: 0,
Safari: 0,
Konq: 0,
Opera: 0,
Chrome: 0,
// Specific version
Ver: null
};
// Platform/device/OS
Var system = {
Win: false,
Mac: false,
X11: false,
// Mobile devices
Iphone: false,
Ipod: false,
Ipad: false,
Ios: false,
Android: false,
NokiaN: false,
WinMobile: false,
// Game systems
Wii: false,
Ps: false
};
// Detect rendering engines/browsers
Var ua = navigator. userAgent;
If (window. opera ){
Engine. ver = browser. ver = window. opera. version ();
Engine. opera = browser. opera = parseFloat (engine. ver );
} Else if (/AppleWebKit \/(\ S +)/. test (ua )){
Engine. ver = RegExp ["$1"];
Engine. webkit = parseFloat (engine. ver );
// Figure out if it's Chrome or Safari
If (/Chrome \/(\ S +)/. test (ua )){
Browser. ver = RegExp ["$1"];
Browser. chrome = parseFloat (browser. ver );
} Else if (/Version \/(\ S +)/. test (ua )){
Browser. ver = RegExp ["$1"];
Browser. safari = parseFloat (browser. ver );
} Else {
// Approximate version
Var safariVersion = 1;
If (engine. webkit <100 ){
SafariVersion = 1;
} Else if (engine. webkit <312 ){
SafariVersion = 1.2;
} Else if (engine. webkit <412 ){
SafariVersion = 1.3;
} Else {
SafariVersion = 2;
}
Browser. safari = browser. ver = safariVersion;
}
} Else if (/KHTML \/(\ S +)/. test (ua) |/Konqueror \/([^;] +)/. test (ua )){
Engine. ver = browser. ver = RegExp ["$1"];
Engine. khtml = browser. konq = parseFloat (engine. ver );
} Else if (/rv :( [^ \)] +) \) Gecko \/\ d {8}/. test (ua )){
Engine. ver = RegExp ["$1"];
Engine. gecko = parseFloat (engine. ver );
// Determine if it's Firefox
If (/Firefox \/(\ S +)/. test (ua )){
Browser. ver = RegExp ["$1"];
Browser. firefox = parseFloat (browser. ver );
}
} Else if (/MSIE ([^;] +)/. test (ua )){
Engine. ver = browser. ver = RegExp ["$1"];
Engine. ie = browser. ie = parseFloat (engine. ver );
}
// Detect browsers
Browser. ie = engine. ie;
Browser. opera = engine. opera;
// Detect platform
Var p = navigator. platform;
System. win = p. indexOf ("Win") = 0;
System. mac = p. indexOf ("Mac") = 0;
System. x11 = (p = "X11") | (p. indexOf ("Linux") = 0 );
// Detect windows operating systems
If (system. win ){
If (/Win (? : Dows )? ([^ Do] {2}) \ s? (\ D + \. \ d + )? /. Test (ua )){
If (RegExp ["$1"] = "NT "){
Switch (RegExp ["$2"]) {
Case "5.0 ":
System. win = "2000 ";
Break;
Case "5.1 ":
System. win = "XP ";
Break;
Case "6.0 ":
System. win = "Vista ";
Break;
Case "6.1 ":
System. win = "7 ";
Break;
Default:
System. win = "NT ";
Break;
}
} Else if (RegExp ["$1"] = "9x "){
System. win = "ME ";
} Else {
System. win = RegExp ["$1"];
}
}
}
// Mobile devices
System. iphone = ua. indexOf ("iPhone")>-1;
System. ipod = ua. indexOf ("iPod")>-1;
System. ipad = ua. indexOf ("iPad")>-1;
System. nokiaN = ua. indexOf ("NokiaN")>-1;
// Windows mobile
If (system. win = "CE "){
System. winMobile = system. win;
} Else if (system. win = "Ph "){
If (/Windows Phone OS (\ d +. \ d +)/. test (ua )){;
System. win = "Phone ";
System. winMobile = parseFloat (RegExp ["$1"]);
}
}
// Determine iOS version
If (system. mac & ua. indexOf ("Mobile")>-1 ){
If (/CPU (? : IPhone )? OS (\ d + _ \ d +)/. test (ua )){
System. ios = parseFloat (RegExp. $1. replace ("_","."));
} Else {
System. ios = 2; // can't really detect-so guess
}
}
// Determine Android version
If (/Android (\ d + \. \ d +)/. test (ua )){
System. android = parseFloat (RegExp. $1 );
}
// Gaming systems
System. wii = ua. indexOf ("Wii")>-1;
System. ps =/playstation/I. test (ua );
// Return it
Return {
Engine: engine,
Browser: browser,
System: system
};
}();

Determine the browser name, version number, and operating system

The Code is as follows:

Var BrowserDetect = {
Init: function (){
This. browser = this. searchString (this. databrown) | "An unknown browser ";
This. version = this. searchVersion (navigator. userAgent)
| This. searchVersion (navigator. appVersion)
| "An unknown version ";
This. OS = this. searchString (this. dataOS) | "an unknown OS ";
},
SearchString: function (data ){
For (var I = 0; I Var dataString = data [I]. string;
Var dataProp = data [I]. prop;
This. versionSearchString = data [I]. versionSearch | data [I]. identity;
If (dataString ){
If (dataString. indexOf (data [I]. subString )! =-1)
Return data [I]. identity;
}
Else if (dataProp)
Return data [I]. identity;
}
},
SearchVersion: function (dataString ){
Var index = dataString. indexOf (this. versionSearchString );
If (index =-1) return;
Return parseFloat (dataString. substring (index + this. versionSearchString. length + 1 ));
},
DataBrowser :[
{
String: navigator. userAgent,
SubString: "Chrome ",
Identity: "Chrome"
},
{String: navigator. userAgent,
SubString: "OmniWeb ",
VersionSearch: "OmniWeb /",
Identity: "OmniWeb"
},
{
String: navigator. vendor,
SubString: "Apple ",
Identity: "Safari ",
VersionSearch: "Version"
},
{
Prop: window. opera,
Identity: "Opera ",
VersionSearch: "Version"
},
{
String: navigator. vendor,
SubString: "iCab ",
Identity: "iCab"
},
{
String: navigator. vendor,
SubString: "KDE ",
Identity: "Konqueror"
},
{
String: navigator. userAgent,
SubString: "Firefox ",
Identity: "Firefox"
},
{
String: navigator. vendor,
SubString: "Camino ",
Identity: "Camino"
},
{// For newer Netscapes (6 +)
String: navigator. userAgent,
SubString: "Netscape ",
Identity: "Netscape"
},
{
String: navigator. userAgent,
SubString: "MSIE ",
Identity: "Internet Explorer ",
VersionSearch: "MSIE"
},
{
String: navigator. userAgent,
SubString: "Gecko ",
Identity: "Mozilla ",
VersionSearch: "rv"
},
{// For older Netscapes (4 -)
String: navigator. userAgent,
SubString: "Mozilla ",
Identity: "Netscape ",
VersionSearch: "Mozilla"
}
],
DataOS :[
{
String: navigator. platform,
SubString: "Win ",
Identity: "Windows"
},
{
String: navigator. platform,
SubString: "Mac ",
Identity: "Mac"
},
{
String: navigator. userAgent,
SubString: "iPhone ",
Identity: "iPhone/iPod"
},
{
String: navigator. platform,
SubString: "Linux ",
Identity: "Linux"
}
]
};
BrowserDetect. init ();
Alert (BrowserDetect. browser); // name
Alert (BrowserDetect. version); // version
Alert (BrowserDetect. OS) // System