我們常常會碰到這樣一個問題： 如何將在同一頁面上的一個<select>或<listbox>的值傳到另一個<select>或<listbox>中 ？這是一個很煩人的問題。可是有時候你偏偏會遇到。 那什麼辦呢？
下面是我“煙酒”了一個上午， 現貼上來讓大家共享。 用的方法是很笨也挺麻煩。不過總是有點成就感的。呵呵！大家看看， 指點指點.....
<%@ Language=VBScript %>
<Html>
<HEAD>
<META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0">
</HEAD>
<script language="vbscript">
</script>
<body bgcolor="#ffffff">
<form name="form1" action="test01.ASP" target="_self">
<p><TEXTAREA id=text01 name=text01></TEXTAREA></p>
<table>
<tr>
<td>
<select name="select1" language="Javascript" size=5>
<option value=11111>11111</option>
<option value=22222>22222</option>
<option value=33333>33333</option>
</select>
</td>
<td>
<label onClick=do_select()><font color=#ff00dc><u>->> </u></font> </label><br><br>
<label onClick=do_select2()><font color=#ff00dc><u><<- </u></font> </label>
</td>
<%
str="function do_select() {" & vbCrlf & _
"if (document.form1.select1.options.length > 0) {"&vbCrlf&_
"var j=0;"&vbCrlf&_
"for(var i=0;i<document.form1.select1.options.length;i++) {"&vbCrlf & _
"if(document.form1.select1.options(i).selected) {"&vbCrlf& _
"j=j+1; break" & vbCrlf & "}"&vbCrlf & "}"&vbCrlf& _
"if (j > 0) {"&vbCrlf&_ "document.form1.sel2.options[document.form1.sel2.options.length] = new Option(" & _
"document.form1.select1.options[document.form1.select1.selectedIndex].value," & _
"document.form1.select1.options[document.form1.select1.selectedIndex].value);"& vbCrlf
Response.Write "<td><SELECT id=sel2 name=sel2 size=5>"
Response.Write "</select></td>"
str=str&vbCrlf&"document.form1.select1.options[document.form1.select1.selectedIndex]=null;"&vbCrlf & _
"if (document.form1.select1.options.length > 1) {"&vbCrlf '&_
str=str&vbCrlf & "}" & vbCrlf & "}" & vbCrlf& "}" & vbCrlf& "}" & vbCrlf
Response.Write "<SCR"& "IPT LANGUAGE=""Javascript"">" & vbCrlf
Response.Write str & vbCrlf & "</SCR"&"IPT>"& vbCrlf
%>
<%
str=""
str="function do_select2() {" & vbCrlf & _
"if (document.form1.sel2.options.length > 0) {"&vbCrlf&_
"var j=0;"&vbCrlf&_
"for(var i=0;i<document.form1.sel2.options.length;i++) {"&vbCrlf & _
"if(document.form1.sel2.options(i).selected) {"&vbCrlf& _
"j=j+1; break" & vbCrlf & "}"&vbCrlf & "}"&vbCrlf& _
"if (j > 0) {"&vbCrlf&_
"document.form1.select1.options[document.form1.select1.options.length] = new Option(" & _
"document.form1.sel2.options[document.form1.sel2.selectedIndex].value," & _
"document.form1.sel2.options[document.form1.sel2.selectedIndex].value);"& vbCrlf
str=str&"document.form1.sel2.options[document.form1.sel2.selectedIndex] =null;" & vbCrlf &"}"& vbCrlf &"}"& vbCrlf &"}"
Response.Write "<SCR"& "IPT LANGUAGE=""JavaScript"">" & vbCrlf
Response.Write str & vbCrlf & "</SCR"&"IPT>"& vbCrlf
%>
</tr>
</table>
</form>
</body>
</Html>
