Jquery联动

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>测试联动</title>
    <script src="Script/jquery-1.8.2.js"></script>
    <script src="Script/jquery-1.8.2.min.js"></script>
    <script type="text/javascript">
        $(function () {
            $("#mainList").find("select").eq(0).show();
            $("#main").change(function () {
                var ss = $('#main')[0].selectedIndex;
                $("#mainList").find("select").each(function (i) {
                    if (i == ss) {
                        $("#mainList").find("select").eq(i).show();
                    } else {
                        $("#mainList").find("select").eq(i).hide();
                    }
                });
            });
        });
    </script>
</head>
<body>

    <select id="main">
        <option value="one">one</option>
        <option value="two">two</option>
        <option value="three">three</option>
        <option value="four">four</option>
    </select>
    <div id="mainList">
        <select style="display: none;">
            <option value="one">one</option>
            <option value="two">two</option>
            <option value="three">three</option>
            <option value="four">four</option>
        </select>
        <select style="display: none;">
            <option value="one">1</option>
            <option value="two">2</option>
            <option value="three">3</option>
            <option value="four">4</option>
        </select>
        <select style="display: none;">
            <option value="one">a</option>
            <option value="two">b</option>
            <option value="three">c</option>
            <option value="four">d</option>
        </select>
        <select style="display: none;">
            <option value="one">aa</option>
            <option value="two">bb</option>
            <option value="three">cc</option>
            <option value="four">dd</option>
        </select>
    </div>
</body>
</html>

  

原文地址:https://www.cnblogs.com/auther/p/3196941.html