作用：:image 选择器选取类型为 image 的 <input> 元素。大理石量具哪家好
语法：$(":image")
<html>
<head>
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$(":image").css("background-color","#B2E0FF");
});
</script>
</head>
<body>
<html>
<body>
<form action="">
Name: <input type="text" name="user" />
<br />
Password: <input type="password" name="password" />
<br />
<input type="image" src="http://img.php.cn/upload/article/000/005/656/5af270fd37755429.jpg" />
</form>
</body>
</html>
</body>
</html>
原文：https://www.cnblogs.com/furuihua/p/11944006.html