jq实现checkbox全选中以及获得选中的checkbox的值

[b]html代码[/b]

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head><title>Simple jsp page</title>
    <script type="text/javascript" src="../js/jquery-1.3.2.js"></script>
    <script type="text/javascript" src="../js/checkbox.js"></script>

</head>
<body>
<form action="#" method="post">
    <input type="checkbox" id="select"/> 全选<br/>
    <input type="checkbox" value="1" name="items"><br/>
    <input type="checkbox" value="2" name="items"><br/>
    <input type="checkbox" value="3" name="items"> <br/>
    <input type="checkbox" value="4" name="items"> <br/>
    <input type="checkbox" value="5" name="items"> <br/>
    <input type="checkbox" value="6" name="items"> <br/>
    <input type="checkbox" value="7" name="items"> <br/>
    <input type="checkbox" value="8" name="items"> <br/>
    <input type="checkbox" value="9" name="items"> <br/>
    <input type="checkbox" value="10" name="items"> <br/>
    <input type="checkbox" value="11" name="items"> <br/>

    <input type="submit" id="submit" value="提交">
</form>
</body>
</html>

[b]js代码[/b]

$(function() {
    $("#select").click(function() {
        if ($(this).attr("checked")) {
            $("input[name=items]").each(function() {
                $(this).attr("checked", true);
            });
        } else {
            $("input[name=items]").each(function() {
                $(this).attr("checked", false);
            });
        }
    });
    //得到选中的值，ajax操作使用
    $("#submit").click(function() {
        var text="";
        $("input[name=items]").each(function() {
            if ($(this).attr("checked")) {
                text += ","+$(this).val();
            }
        });
         alert(text);
    });
});