封装cookie.js、EventUtil.js、

最近学习了javascript，封装好的东西看起来舒服，以备需要的时候拉出来，jquery对javascript做了很好的封装！以后会多用jquery多些

var CookieUtil = {

get: function (name){
var cookieName = encodeURIComponent(name) + "=",
cookieStart = document.cookie.indexOf(cookieName),
cookieValue = null,
cookieEnd;

if (cookieStart > -1){
cookieEnd = document.cookie.indexOf(";", cookieStart);
if (cookieEnd == -1){
cookieEnd = document.cookie.length;
}
cookieValue = decodeURIComponent(document.cookie.substring(cookieStart + cookieName.length, cookieEnd));
}

return cookieValue;
},

set: function (name, value, expires, path, domain, secure) {
var cookieText = encodeURIComponent(name) + "=" + encodeURIComponent(value);

if (expires instanceof Date) {
cookieText += "; expires=" + expires.toGMTString();
}

if (path) {
cookieText += "; path=" + path;
}

if (domain) {
cookieText += "; domain=" + domain;
}

if (secure) {
cookieText += "; secure";
}

document.cookie = cookieText;
},

unset: function (name, path, domain, secure){
this.set(name, "", new Date(0), path, domain, secure);
}

};

/*SubCookieUtil.js*/
var SubCookieUtil = {

get: function (name, subName){
var subCookies = this.getAll(name);
if (subCookies){
return subCookies[subName];
} else {
return null;
}
},

getAll: function(name){
var cookieName = encodeURIComponent(name) + "=",
cookieStart = document.cookie.indexOf(cookieName),
cookieValue = null,
cookieEnd,
subCookies,
i,
parts,
result = {};

if (cookieStart > -1){
cookieEnd = document.cookie.indexOf(";", cookieStart)
if (cookieEnd == -1){
cookieEnd = document.cookie.length;
}
cookieValue = document.cookie.substring(cookieStart + cookieName.length, cookieEnd);

if (cookieValue.length > 0){
subCookies = cookieValue.split("&");

for (i=0, len=subCookies.length; i < len; i++){
parts = subCookies[i].split("=");
result[decodeURIComponent(parts[0])] = decodeURIComponent(parts[1]);
}

return result;
}
}

return null;
},

set: function (name, subName, value, expires, path, domain, secure) {

var subcookies = this.getAll(name) || {};
subcookies[subName] = value;
this.setAll(name, subcookies, expires, path, domain, secure);

},

setAll: function(name, subcookies, expires, path, domain, secure){

var cookieText = encodeURIComponent(name) + "=",
subcookieParts = new Array(),
subName;

for (subName in subcookies){
if (subName.length > 0 && subcookies.hasOwnProperty(subName)){
subcookieParts.push(encodeURIComponent(subName) + "=" + encodeURIComponent(subcookies[subName]));
}
}

if (subcookieParts.length > 0){
cookieText += subcookieParts.join("&");

if (expires instanceof Date) {
cookieText += "; expires=" + expires.toGMTString();
}

if (path) {
cookieText += "; path=" + path;
}

if (domain) {
cookieText += "; domain=" + domain;
}

if (secure) {
cookieText += "; secure";
}
} else {
cookieText += "; expires=" + (new Date(0)).toGMTString();
}

document.cookie = cookieText;

},

unset: function (name, subName, path, domain, secure){
var subcookies = this.getAll(name);
if (subcookies){
delete subcookies[subName];
this.setAll(name, subcookies, null, path, domain, secure);
}
},

unsetAll: function(name, path, domain, secure){
this.setAll(name, null, new Date(0), path, domain, secure);
}

};

var EventUtil = {

addHandler: function(element, type, handler){
if (element.addEventListener){
element.addEventListener(type, handler, false);
} else if (element.attachEvent){
element.attachEvent("on" + type, handler);
} else {
element["on" + type] = handler;
}
},

getButton: function(event){
if (document.implementation.hasFeature("MouseEvents", "2.0")){
return event.button;
} else {
switch(event.button){
case 0:
case 1:
case 3:
case 5:
case 7:
return 0;
case 2:
case 6:
return 2;
case 4: return 1;
}
}
},

getCharCode: function(event){
if (typeof event.charCode == "number"){
return event.charCode;
} else {
return event.keyCode;
}
},

getClipboardText: function(event){
var clipboardData =  (event.clipboardData || window.clipboardData);
return clipboardData.getData("text");
},

getEvent: function(event){
return event ? event : window.event;
},

getRelatedTarget: function(event){
if (event.relatedTarget){
return event.relatedTarget;
} else if (event.toElement){
return event.toElement;
} else if (event.fromElement){
return event.fromElement;
} else {
return null;
}

},

getTarget: function(event){
return event.target || event.srcElement;
},

getWheelDelta: function(event){
if (event.wheelDelta){
return (client.engine.opera && client.engine.opera < 9.5 ? -event.wheelDelta : event.wheelDelta);
} else {
return -event.detail * 40;
}
},

preventDefault: function(event){
if (event.preventDefault){
event.preventDefault();
} else {
event.returnValue = false;
}
},

removeHandler: function(element, type, handler){
if (element.removeEventListener){
element.removeEventListener(type, handler, false);
} else if (element.detachEvent){
element.detachEvent("on" + type, handler);
} else {
element["on" + type] = null;
}
},

setClipboardText: function(event, value){
if (event.clipboardData){
event.clipboardData.setData("text/plain", value);
} else if (window.clipboardData){
window.clipboardData.setData("text", value);
}
},

stopPropagation: function(event){
if (event.stopPropagation){
event.stopPropagation();
} else {
event.cancelBubble = true;
}
}

};

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 = "Mozilla/4.0 (compatible; MSIE 7.0; Windows Phone OS 7.0; Trident/3.1; IEMobile/7.0) Asus;Galaxy6";//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
};

}();

//跨浏览器添加事件
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);
});
}
}

//跨浏览器移除事件
function removeEvent(obj, type, fn) {
if (obj.removeEventListener) {
obj.removeEventListener(type, fn, false);
} else if (obj.detachEvent) {
obj.detachEvent('on' + type, fn);
}
}

//跨浏览器阻止默认行为
function preDef(evt) {
var e = evt || window.event;
if (e.preventDefault) {
e.preventDefault();
} else {
e.returnValue = false;
}
}

//跨浏览器获取目标对象
function getTarget(evt) {
if (evt.target) {        //W3C
return evt.target;
} else if (window.event.srcElement) {        //IE
return window.event.srcElement;
}
}

//跨浏览器获取字符编码
function getCharCode(evt) {
var e = evt || window.event;
if (typeof e.charCode == 'number') {
return e.charCode;
} else {
return e.keyCode;
}
}

function createXHR() {
if (typeof XMLHttpRequest != 'undefined') {
return new XMLHttpRequest();
} else if (typeof ActiveXObject != 'undefined') {
var version = [
'MSXML2.XMLHttp.6.0',
'MSXML2.XMLHttp.3.0',
'MSXML2.XMLHttp'
];
for (var i = 0; version.length; i ++) {
try {
return new ActiveXObject(version[i]);
} catch (e) {
//跳过
}
}
} else {
throw new Error('您的系统或浏览器不支持XHR对象！');
}
}

//名值对转换为字符串
function params(data) {
var arr = [];
for (var i in data) {
arr.push(encodeURIComponent(i) + '=' + encodeURIComponent(data[i]));
}
return arr.join('&');
}

//封装ajax
function ajax(obj) {
var xhr = createXHR();
obj.url = obj.url + '?rand=' + Math.random();
obj.data = params(obj.data);
if (obj.method === 'get') obj.url += obj.url.indexOf('?') == -1 ? '?' + obj.data : '&' + obj.data;
if (obj.async === true) {
xhr.onreadystatechange = function () {
if (xhr.readyState == 4) {
callback();
}
};
}
xhr.open(obj.method, obj.url, obj.async);
if (obj.method === 'post') {
xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
xhr.send(obj.data);
} else {
xhr.send(null);
}
if (obj.async === false) {
callback();
}
function callback() {
if (xhr.status == 200) {
obj.success(xhr.responseText);            //回调传递参数
} else {
alert('获取数据错误！错误代号：' + xhr.status + '，错误信息：' + xhr.statusText);
}
}
}

//调用ajax
addEvent(document, 'click', function () {
ajax({
method : 'post',
url : 'demo3.php',
data : {
'name' : 'Lee',
'age' : 100
},
success : function (text) {
alert(text);
},
async : true
});
});