<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<style type="text/css">
div.box{width:300px;padding:20px;margin:20px;border:4px dashed #ccc;}
div.box span{color:#999;font-style:italic;}
div.content{width:250px;margin:10px 0;padding:20px;border:2px solid #ff6666;}
input[type='checkbox']{margin:5px;}
input[type='button']{height:30px;margin:10px;padding:5px 10px;}
</style>
</head>
<body>
<div class="box">
<span>请输入用户名，限定字母、数字或下划线的组合：</span>
<div class="content">
<span>水果：</span>
<input type="checkbox" name="fruit" value="梨子"/>梨子
<input type="checkbox" name="fruit" value="李子"/>李子
<input type="checkbox" name="fruit" value="栗子"/>栗子
<input type="checkbox" name="fruit" value="荔枝"/>荔枝
<span>蔬菜：</span>
<input type="checkbox" name="vegetable" value="青菜"/>青菜
<input type="checkbox" name="vegetable" value="萝卜"/>萝卜
<input type="checkbox" name="vegetable" value="土豆"/>土豆
<input type="checkbox" name="vegetable" value="茄子"/>茄子
</div>
<input type="button" value="提交">
</div>
</body>
<script src="jquery-3.1.1.min.js"></script>
<script type="text/javascript">
//设置属性值
$("input:button").click(function(){
var fruit = "";
var vegetable = "";
$("input:checkbox[name='fruit']:checked").each(function(){//根据name属性，寻找到元素，对应的checked状态
fruit += $(this).val() + " ";
});
$("input:checkbox[name='vegetable']:checked").each(function(){
vegetable += $(this).val() + " ";
});
alert("已选择水果："+fruit+",已选择蔬菜："+vegetable);
});
</script>
</html>
