<html>
<head>
<title>Javascript版選擇下拉菜單互移且排序</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<p>選定一項或多項然后點擊添加或移除(按住shift或ctrl可以多選)，或在選擇項上雙擊進行添加和移除。</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="山東">山東</option>
<option value="安徽">安徽</option>
<option value="重慶">重慶</option>
<option value="福建">福建</option>
<option value="甘肅">甘肅</option>
<option value="廣東">廣東</option>
<option value="廣西">廣西</option>
<option value="貴州">貴州</option>
<option value="海南">海南</option>
<option value="河北">河北</option>
<option value="黑龍江">黑龍江</option>
<option value="河南">河南</option>
<option value="湖北">湖北</option>
<option value="湖南">湖南</option>
<option value="內蒙古">內蒙古</option>
<option value="江蘇">江蘇</option>
<option value="江西">江西</option>
<option value="吉林">吉林</option>
<option value="遼寧">遼寧</option>
<option value="寧夏">寧夏</option>
<option value="青海">青海</option>
<option value="山西">山西</option>
<option value="陜西">陜西</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="澳門">澳門</option>
<option value="臺灣">臺灣</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>
