利用图片的 onerror 事件载入默认图片
当图片不存在时载入默认图片的代码：
代码
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>载入默认图片</title>
</head>
<BODY>
<div id="container">
</div>
<SCRIPT LANGUAGE="JavaScript">
<!--
window.onload=function(){
var container = document.getElementById("container");
var thumbImg = container.appendChild(document.createElement(\'img\'));
thumbImg.src = "20091214920298336.jpg" ; //不存在的图片
thumbImg.onerror = function(){thumbImg.src=\'http://www.google.com/intl/zh-CN_ALL/images/logo.gif\';};
}
//-->
</SCRIPT>
</BODY>
</HTML>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>载入默认图片</title>
</head>
<BODY>
<div id="container">
</div>
<SCRIPT LANGUAGE="JavaScript">
<!--
window.onload=function(){
var container = document.getElementById("container");
var thumbImg = container.appendChild(document.createElement(\'img\'));
thumbImg.src = "20091214920298336.jpg" ; //不存在的图片
thumbImg.onerror = function(){thumbImg.src=\'http://www.google.com/intl/zh-CN_ALL/images/logo.gif\';};
}
//-->
</SCRIPT>
</BODY>
</HTML>
经测试兼容 FF 和 IE 6