数据复制与删除

[峰哥的Android进阶之路]

这道题新手不会，求大佬帮帮我,第二道，用JavaScript编程

[天际的海浪]

<select id="test1" size="5">
	<option value="0">aaa</option>
	<option value="1">bbb</option>
	<option value="2">ccc</option>
	<option value="3">ddd</option>
	<option value="4">eee</option>
</select>
<input type="button" value=">>" onclick="moveOption('test1','test2');" />
<input type="button" value="<<" onclick="moveOption('test2','test1');" />
<select id="test2" size="5">
</select>
<script type="text/javascript">
function moveOption(a,b) {
	var t1 = document.getElementById(a);
	var t2 = document.getElementById(b);
	var si = t1.options[t1.selectedIndex];
	if (si) {
		t2.appendChild(si);
	}
}