<img id="my" src="1.jpg" border="0">
<script language="javascript">
var _err = false;
document.getElementById("my").onerror = function(){
if(!_err){_err=true;this.src = "default.jpg";}
}
</script>
<script language="javascript">
var _err = false;
document.getElementById("my").onerror = function(){
if(!_err){_err=true;this.src = "default.jpg";}
}
</script>
<img id=my src="1.jpg" border="0"> <script type="text/javascript">
// 如果 id为“my”的IMG标签图像不存在,则调入default.gif。怎么写???
var img = document.getElementById("my");
img.onerror = function()
{
this.src = "default.gif";
};
</script>
{
this.src = "default.gif";
this.onerror=null;
};
可以使用alt提示<img src="aaa.gif" alt="图片不存在">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> new document </title>
<meta name="generator" content="editplus" />
<meta name="author" content="Gao YiXiang" />
<meta name="email" content="[email protected]" />
<meta name="keywords" content="javascript dhtml dom" />
<meta name="description" content="I love web development." />
</head>
<body>
<img id=my src="1.jpg" border="0"> <script type="text/javascript">
// 如果 id为“my”的IMG标签图像不存在,则调入default.gif。怎么写???var defaultImg = "default.gif";var img = document.getElementById("my");
// 自定义首次错误标识。
img.firstError = true;
img.onerror = function()
{
if (this.firstError)
{
this.firstError = false; this.src = defaultImg;
}
else
{
this.alt = defaultImg;
}
};
</script>
</body>
</html>