js怎么实现Select互换数据方法，基于javascript实现两个Select互换数据例子，相信大家都见到过，即使手头暂时用不上，收藏起来，以备后用。
运行图：
具体代码如下：
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<title>两个Select互换数据，简单实用</title><script language="JavaScript">var
MainSel = null;var
SlaveSel = null;var
Item_org = new
Array();function
DoAdd(){var
this_sel = null;for(var
i=0;i<MainSel.options.length;i++){this_sel = MainSel.options[i];if(this_sel.selected){SlaveSel.appendChild(this_sel);i--;}}sort_Main(SlaveSel);}function
DoDel(){var
this_sel = null;for(var
i=0;i<SlaveSel.options.length;i++){this_sel = SlaveSel.options[i];if(this_sel.selected){MainSel.appendChild(this_sel);i--;}}sort_Main(MainSel);}function
sort_Main(the_Sel){var
this_sel = null;for(var
i=0;i<Item_org.length;i++){for(var
j=0;j<the_Sel.options.length;j++){this_sel = the_Sel.options[j];if(this_sel.value==Item_org[i][0] && this_sel.text==Item_org[i][1]){the_Sel.appendChild(this_sel);}}}}window.onload=function(){MainSel = select1;SlaveSel = select2;MainSel.ondblclick=DoAdd;SlaveSel.ondblclick=DoDel;var
this_sel = null;for(var
i=0;i<MainSel.options.length;i++){this_sel = MainSel.options[i];Item_org.push(new
Array(this_sel.value,this_sel.text));}}</script><table width="300"
border="0"
cellspacing="0"
cellpDoAdding="0"
align="center"><tr><td width="45%"
align="center"><select id="select1"
size="5"
multiple style="width: 100px"><option value="111">111</option><option value="222">222</option><option value="333">333</option><option value="444">444</option><option value="555">555</option><option value="666">666</option></select> </td><td width="10%"
align="center"><input name="DoAdd"
type="button"
value=">>"
onClick="DoAdd()"><br><input name="DoDel"
type="button"
value="<<"
onClick="DoDel()"></td><td width="45%"
align="center"><select id="select2"
size="5"
multiple style="width: 100px"></select></td></tr></table> |