工具类函数

var utility = {
Event: {
addHandler: function(el, type, handler) {
if (el.addEventListener !== undefined) {
el.addEventListener(type, handler, false)
} else if (el.attachEvent) {
el.attachEvent('on' + type, handler);
} else {
el['on' + type] = handler;
}
},
removeHandler: function(el, type, handler) {
if (el.removeEventListener !== undefined) {
el.removeEventListener(type, handler);
} else if (el.detachEvent) {
el.detachEvent(type, handler);
} else {
el['on' + type] = null;
}
},
getEvent: function(event) {
return (event !== undefined) ? event : window.event;
},
getTarget: function(event) {
return event.target !== undefined ? event.target : event.srcElement;
},
preventDefault: function(event) {
if (event.preventDefault !== undefined) {
event.preventDefault();
} else {
event.returnVaule = false;
}
},
stopPropagation: function(event) {
if (event.stopPropagation !== undefined) {
event.stopPropagation();
} else {
event.cancelBubble = true;
}
}
},
Cookie: {
setCookie: function(name, value, days) {
if (days !== undefined) {
var oDate = new Date();
oDate.setDate(oDate.getDate() + days);
document.cookie = encodeURIComponent(name) + '=' + encodeURIComponent(value) + ';expires=' + oDate;
} else {
document.cookie = encodeURIComponent(name) + '=' + encodeURIComponent(value);
}


},
getCookie: function(name) {
var cookieArray = decodeURIComponent(document.cookie).split('; ');
var cookieOfArray = [];
for (var i = 0; i < cookieArray.length; i++) {
cookieOfArray = cookieArray[i].split('=');
if (cookieOfArray[0] === name) {
return cookieOfArray[1];
}
}
return '';
},
removeCookie: function(name) {
this.setCookie(name, '', -1);
}
},
Ajax: {
send: function(method, url, asyn, successfn, errorfn) {
var xhr = null;
if (window.ActiveXObject) { //如果是IE
xhr = new ActiveXObject("Microsoft.XMLHTTP");
} else if (window.XMLHttpRequest) {
xhr = new XMLHttpRequest(); //实例化一个xmlHttpReg
}
var ajaxResponseOK = (location.protocol === 'file:') ? 0 : 200;
xhr.onreadystatechange = function() {
if (xhr.readyState === 4) {
if (xhr.status === ajaxResponseOK) {
if (typeof successfn === 'function') {
successfn(xhr.responseText);
}
} else {
if (typeof errorfn === 'function') {
errorfn(xhr.status);
}
}
}
}
xhr.open(method, url, asyn);
xhr.send();
}
},
Movement: {
getStyle: function(obj, att) {
if (obj.currentStyle) {
return obj.currentStyle[att];
} else {
return getComputedStyle(obj, false)[att];
}
},
startMove: function(obj, json, fn) {
clearInterval(obj.timer);
var self = this;
obj.timer = setInterval(function() {
var isOver = true;
for (var att in json) {
var iCur = 0;
if (att === 'opacity') {
iCur =parseInt(parseFloat(self.getStyle(obj, att)) * 100);
} else {
iCur = parseInt(self.getStyle(obj, att));
}
var iSpeed = (json[att] - iCur) / 8;
iSpeed = (iSpeed > 0) ? Math.ceil(iSpeed) : Math.floor(iSpeed);
if (iCur !== json[att]) {
isOver = false;
}


if (att === 'opacity') {
obj.style.filter = 'alpha(opacity:' + (iCur + iSpeed) + ')'
obj.style[att] = (iCur + iSpeed) / 100;
// document.getElementById('txt1').value=getStyle(obj,att);
} else {
obj.style[att] = iCur + iSpeed + 'px';
}


}
if (isOver) {
clearInterval(obj.timer);
if (fn) {
fn();
}
}
}, 30);
}
}
}