Question

javascript，类的方式里面的setTimeout

function Tip(){
this.iX=1;
this.iY=2;
this.oTip = document.getElementById("divTip1");
this.tipState;
this.iSetShow
}
Tip.prototype.showTip = function(oEvent){
if(!oEvent) window.event;
this.iX = oEvent.clientX;
this.iY = oEvent.clientY;
this.iSetShow = setTimeout(function(){
alert(caller);
this.tipState = "visible"
this.oTip.style.visibility = this.tipState;
this.oTip.style.left = oEvent.clientX + 5;
this.oTip.style.top = oEvent.clientY + 5;
},500);
}
Tip.prototype.hideTip = function(oEvent){
this.iSetShow = null;
this.tipState = "hidden";
this.oTip.style.visibility = this.tipState;
}
oTip1 = new Tip();
<div id="div1"
style="background-color: red; height: 50px; width: 50px"
onmouseover="oTip1.showTip(event)" onMouseOut="oTip1.hideTip(event)"></div>

<div id="divTip1"
style="background-color: yellow; position: absolute; visibility: hidden; padding: 5px">
<span style="font-weight: bold">Custom Tooltip</span><br />
More details can go here.
</div>
在这一段
this.iSetShow = setTimeout(function(){
this.tipState = "visible"
this.oTip.style.visibility = this.tipState;
this.oTip.style.left = oEvent.clientX + 5;
this.oTip.style.top = oEvent.clientY + 5;
},500);
里面的this和外面的this指向不同的对象，要怎么办啊？

Answer 1

先．．．．．．．．．．．．．．．．．．．． 再．．．．．．．．．．．．．．．然后．．．．．．．．．．．．．．．．．．．．．．．．．最后．．．．．．．．．．．．．．．．．
这样就可以了