【img】
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
</head>
<body>
<div>
<img src="http://www.w3cschool.cn/style/download.png">
</div>
<script>
var images =$("div img")
$.each(images, function() {
$(this).replaceWith('<a href="rias">'+this.outerHTML+'</a>');
});
</script>
</body>
</html>
