如何用javascript JQuery 判断图片是否存在！！！
个人记录在案，以免遗忘。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>无标题页</title>
<script language="javascript" type="text/javascript" src="http://www.mainaer.com/JS/jquery-1-3-2.js"></script>
</head>
<body>
<div>
<img src="http://www.mainaer.com/skin/maps/4.png" />
<img src="http://www.mainaer.com/skin/maps/5_R.png" />
<img src="http://www.mainaer.com/skin/maps/6.png" />
<img src="http://www.mainaer.com/skin/maps/7.png" />
<img src="http://www.mainaer.com/skin/maps/8.png" />
</div>
<div id="msgTool">
</div>
<script language="javascript" type="text/javascript">
$(function (){
$("img").each(function (i,e){
var imgsrc = $(e).attr("src");
$(e).load(function(){
$("<p> ok "+ $(e).width()+":"+$(e).height()+"</p>").appendTo("#msgTool");
}).error(function() {
$("<p> error "+ imgsrc +"</p>").appendTo("#msgTool");
$(e).attr("src","http://www.mainaer.com/uploadfiles/mainaer/nopic.gif");
}) ;
});
});
</script>
</body>
</html>
