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ListBox实现上移,下移,左移,右移的简单实例

2014-02-13 09:06 639 查看
<html><head>    <title>Javascript版选择下拉菜单互移且排序</title>    <meta http-equiv="Content-Type" content="text/html; charset=gb2312"></head><body>    <p>选定一项或多项然后点击添加或移除(按住shift或ctrl可以多选)，或在选择项上双击进行添加和移除。</p>    <form method="post" name="myform">    <table border="0" width="300">        <tr>            <td width="40%">                <select style="width:100px; height:200px" multiple name="list1" size="12" ondblclick="moveOption(document.myform.list1, document.myform.list2)">                    <option value="北京">北京</option>                    <option value="上海">上海</option>                    <option value="山东">山东</option>                    <option value="安徽">安徽</option>                    <option value="重庆">重庆</option>                    <option value="福建">福建</option>                    <option value="甘肃">甘肃</option>                    <option value="广东">广东</option>                    <option value="广西">广西</option>                    <option value="贵州">贵州</option>                    <option value="海南">海南</option>                    <option value="河北">河北</option>                    <option value="黑龙江">黑龙江</option>                    <option value="河南">河南</option>                    <option value="湖北">湖北</option>                    <option value="湖南">湖南</option>                    <option value="内蒙古">内蒙古</option>                    <option value="江苏">江苏</option>                    <option value="江西">江西</option>                    <option value="吉林">吉林</option>                    <option value="辽宁">辽宁</option>                    <option value="宁夏">宁夏</option>                    <option value="青海">青海</option>                    <option value="山西">山西</option>                    <option value="陕西">陕西</option>                    <option value="四川">四川</option>                    <option value="天津">天津</option>                    <option value="西藏">西藏</option>                    <option value="新疆">新疆</option>                    <option value="云南">云南</option>                    <option value="浙江">浙江</option>                    <option value="香港">香港</option>                    <option value="澳门">澳门</option>                    <option value="台湾">台湾</option>                    <option value="其他">其他</option>                </select>            </td>            <td width="20%" align="center">                <input type="button" value=">>" onclick="moveOption(document.myform.list1, document.myform.list2)"><br />                <br />                <input type="button" value="<<" onclick="moveOption(document.myform.list2, document.myform.list1)">            </td>            <td width="40%">                <select style="width:100px; height:200px" multiple name="list2" size="12" ondblclick="moveOption(document.myform.list2, document.myform.list1)">                </select>            </td>            <td>                <button onclick="changepos(list2,-1)" type="button">                    ∧</button>                <br />                <button onclick="changepos(list2,1)" type="button">                    ∨</button>            </td>        </tr>    </table>    值：<input type="text" name="city" size="40">    </form>    <script language="JavaScript">     <!--        function moveOption(e1, e2) {            try {                for (var i = 0; i < e1.options.length; i++) {                    if (e1.options[i].selected) {                        var e = e1.options[i];                        e2.options.add(new Option(e.text, e.value));                        e1.remove(i);                        i = i - 1                    }                }                document.myform.city.value = getvalue(document.myform.list2);            }            catch (e) { }        }

        function getvalue(geto) {            var allvalue = "";            for (var i = 0; i < geto.options.length; i++) {                allvalue += geto.options[i].value + ",";            }            return allvalue;        }

        function changepos(obj, index) {            if (index == -1) {                if (obj.selectedIndex > 0) {                    obj.options(obj.selectedIndex).swapNode(obj.options(obj.selectedIndex - 1))                }            }            else if (index == 1) {                if (obj.selectedIndex < obj.options.length - 1) {                    obj.options(obj.selectedIndex).swapNode(obj.options(obj.selectedIndex + 1))                }            }        }     //-->     </script></body></html>

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标签：  ListBox 上移 下移 左移 右移
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