MoveSpace.prototype.moveEquipment= function(e)
{
alert(this.StoreSpace);//在这里为什么老是弹出“undifined”呢?
} StoreSpace没有定义...,你也没在哪里有实例化什么“类”之类的...
{
alert(this.StoreSpace);//在这里为什么老是弹出“undifined”呢?
} StoreSpace没有定义...,你也没在哪里有实例化什么“类”之类的...
<div id="aa"></div>
<div id="bb"></div><script>function MoveSpace(moveDiv, storeDiv)
{
this.MoveSpace = document.getElementById(moveDiv);
this.StoreSpace = document.getElementById(storeDiv);
alert(this.StoreSpace);//在这里弹出“[object]”
addEventListener(this.MoveSpace, 'mousemove', this.moveEquipment);
} MoveSpace.prototype.moveEquipment= function(e)
{
alert(this.StoreSpace);//在这里为什么老是弹出“undifined”呢?
} function addEventListener(element, eventType, handler)
{
try
{
if (element.addEventListener)
{
element.addEventListener(eventType, handler, false);
}
else if (element.attachEvent)
{
element.attachEvent('on' + eventType, handler);
}
}
catch (e) {throw e;}
}
(new MoveSpace("aa","bb")).moveEquipment()</script>两个都是object啊
<div id="aa">11111111</div>
<div id="bb">2222222</div><script>function MoveSpace(moveDiv, storeDiv)
{
this.MoveSpace = document.getElementById(moveDiv);
this.StoreSpace = document.getElementById(storeDiv);
alert(this.StoreSpace);//在这里弹出“[object]”
var o=this;
addEventListener(this.MoveSpace, 'mousemove', function(){ o.moveEquipment() });
} MoveSpace.prototype.moveEquipment= function(e)
{
alert(this.StoreSpace);//在这里为什么老是弹出“undifined”呢?
} function addEventListener(element, eventType, handler)
{
try
{
if (element.addEventListener)
{
element.addEventListener(eventType, handler, false);
}
else if (element.attachEvent)
{
element.attachEvent('on' + eventType, handler);
}
}
catch (e) {throw e;}
}
new MoveSpace("aa","bb")</script>是这样吧
alert(this.StoreSpace);//在这里弹出“[object]” document.getElementById(storeDiv);就是个对象,所以没有出错alert(this.StoreSpace);//在这里为什么老是弹出“undifined”呢? 可能是调用顺序的事,也有可能访问方式不对,比如用对象.StoreSpace来访问,具体要看你全部的代码
<div id="aa">11111111</div>
<div id="bb">2222222</div><script>Function.prototype.bindAsEventListener = function(object) {
var __method = this;
return function(event) {
return __method.apply(object, [( event || window.event)].concat(Array.prototype.slice.call(arguments)));
}
}function MoveSpace(moveDiv, storeDiv)
{
this.MoveSpace = document.getElementById(moveDiv);
this.StoreSpace = document.getElementById(storeDiv);
alert(this.StoreSpace);//在这里弹出“[object]”
addEventListener(this.MoveSpace, 'mousemove', this.moveEquipment.bindAsEventListener(this));
} MoveSpace.prototype.moveEquipment= function(e)
{
alert(this.StoreSpace);//在这里为什么老是弹出“undifined”呢?
alert(e.type);
} function addEventListener(element, eventType, handler)
{
try
{
if (element.addEventListener)
{
element.addEventListener(eventType, handler, false);
}
else if (element.attachEvent)
{
element.attachEvent('on' + eventType, handler);
}
}
catch (e) {throw e;}
}
new MoveSpace("aa","bb")</script>