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common.js
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;(function(window,undefine){
var client = function(){
//呈现引擎
var engine = {
ie: 0,
gecko: 0,
webkit: 0,
khtml: 0,
opera: 0,
//完整的版本号
ver: null
};
//浏览器
var browser = {
//主要浏览器
ie: 0,
firefox: 0,
safari: 0,
konq: 0,
opera: 0,
chrome: 0,
//具体的版本号
ver: null
};
//平台、设备和操作系统
var system = {
win: false,
mac: false,
x11: false,
//移动设备
iphone: false,
ipod: false,
ipad: false,
ios: false,
android: false,
nokiaN: false,
winMobile: false,
//游戏系统
wii: false,
ps: false
};
//检测呈现引擎和浏览器
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);
//确定是 Chrome 还是 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{
//近似地确定版本号
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);
//确定是不是 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);
}
/*
使用方法
if(client.engine.webkit){
if(client.browser.chrome){
//执行针对chrome的代码
}else if(client.browser.safari){
//执行针对safari的代码
}
}else if(client.engine.gecko){
if(client.browser.firefox){
//执行针对firefox的代码
}else{
//执行针对其他Gecko浏览器的的代码
}
}
*/
//检测浏览器
browser.ie = engine.ie;
browser.opera = engine.opera;
//检测平台
var p = navigator.platform;
system.win = p.indexOf("Win") == 0;
system.mac = p.indexOf("Mac") == 0;
system.x11 = (p == "X11") || (p.indexOf("Linux") == 0);
//检测 Windows 操作系统
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"];
}
}
}
//移动设备
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"]);
}
}
//检测 iOS 版本
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; //不能真正检测出来，所以只能猜测
}
}
//检测 Android 版本
if(/Android (\d+\.\d+)/.test(ua)){
system.android = parseFloat(RegExp.$1);
}
/*
if(client.system.win){
if(client.system.win == "XP") {
//说明是 XP
}else if(client.system.win == "Vista"){
//说明是 Vista
}
}
if(client.engine.webkit){
if (client.system.iOS){
//iOS 手机的内容
}else if(client.system.android){
//Android 手机的内容
}else if(client.system.nokiaN){
//诺基亚手机的内容
}
}
//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"]);
}
}
*/
//游戏系统
system.wii = ua.indexOf("Wii") > -1;
system.ps = /playstation/i.test(ua);
//返回这些对象
return {
engine: engine,
browser: browser,
system: system
};
}();
var EventUtil = {
addHandler: function(element,type,handler){
if(element.addEventListener){
//firefox
element.addEventListener(type,handler,false);
}else if(element.attachEvent){
//ie
element.attachEvent('on'+type,handler);
}else{
element['on'+type] = handler;
}
},
removeHandler: function(element,type,handler){
if(element.removeEventListener){
//firefox
element.removeEventListener(type,handler,false);
}else if(element.detachEvent){
//ie
element.detachEvent('on'+type,handler);
}else{
element['on'+type] =null;
}
},
getEvent: function(event){
return event?event:window.event;
},
getTarget: function(event){
return event.target||event.srcElement;
},
preventDefault: function(event){//取消默认行为
if(event.preventDefault){
event.preventDefault();
}else{
event.returnValue=false;
}
},
stopPropagation: function(event){//阻止冒泡
if(event.stopPropagation){
event.stopPropagation();
}else{
event.cancelBulle=true;
}
},
getWheelDelta: function(event){//鼠标滚轮
if(event.wheelDelta){
/*
ie,opera,chrome,safrari,支持mousewheel,当用户向前滚动时，wheelDelta是120的倍数，乡侯滚动时是-120的倍数。
在Opera9.5之前的版本，wheelDelta值得正负号是相反的。
firefox支持DOMMouseScroll,用户向前滚动时，detail的值是-3的倍数，用户向后滚动时，这个值是3的倍数。
使用方法：
function handleMouseWheel(event){
event=EventUtil.getEvent(event);
var delta=EeventUtil.getWheelDelta(event);
alert(delta);
}
EventUtil.addHandler(document,'mousewheel',handleMouseWheel);
EventUtil.addHandler(document,'DOMMouseScroll',handleMouseWheel);
*/
return (client.engine.opera&&client.engine.opera<9.5?-event.wheelDelta:event.wheelDelta);
}else{
return -event.detail*40;
}
}
}
window.EventUtil=EventUtil;
})(window)