关于如何动态地在同一页面实现两个<select>互传 (s1 <==> s2) （jaklin ) hello! 先祝大家中秋节快乐！ 我们常常会碰到这样一个问题： 如何将在同一页面上的一个<select>或<listbox>的值传到另一个<select>或<listbox>中 ？这是一个很烦人的问题。可是有时候你偏偏会遇到。 那什么办呢？ 下面是我“烟酒”了一个上午， 现贴上来让大家共享。 用的方法是很笨也挺麻烦。不过总是有点成就感的。呵呵！大家看看， 指点指点..... <%@ 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>
