jquery checked选择器 语法
作用：:checked 选择器选取所有选中的复选框或单选按钮。直线电机参数
语法：$(":checked")
jquery checked选择器 示例
<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(){
$(".btn1").click(function(){
$(":checked").hide();
});
});
</script>
</head>
<body>
<form action="">
<input type="radio" name="sex" value="male" checked="checked"/> Male
<br />
<input type="radio" name="sex" value="female" /> Female
<br />
I have a bike:
<input type="checkbox" name="vehicle" value="Bike" />
<br />
I have a car:
<input type="checkbox" name="vehicle" value="Car" checked="checked" />
<br />
I have an airplane:
<input type="checkbox" name="vehicle" value="Airplane" />
</form>
<button class="btn1">Hide Checked Options</button>
</body>
</html>
来源：https://www.cnblogs.com/furuihua/p/11978287.html