0522dom

　　　啥也不说了 直接上代码吧

　　

<body>
<select id="qq" size="8" style="width:100px";>
<option >666</option>
<option >999</option>
</select>
<input type="button" id="c1" value="<<" />
<input type="button" id="c2" value=">>" />
<select id="wx"size="8" style ="width:100px">
<option>444</option>
<option>888</option>
</select>

</body>
</html>

<script>
var wx = document.getElementById("wx");
var cc = document.getElementById("cc");
var qq = document.getElementById("qq");

c2.onclick = function () {

var f = qq.selectedOptions[0];
var value =f.innerText
wx.appendChild(f);


}
c1.onclick = function () {
var x = wx.selectedOptions[0];
var value = x.innerText
qq.appendChild(x);

}

posted @ 2017-05-22 15:53  小伙子很浪  阅读(104)  评论(0)    收藏  举报