工具类函数

Posted 2023-02-06 swjieyi

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);