<select id="ce">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
</select>
<input type="button" value="æ·»å " id="btn"/>
<div id="div">
</div>
<script>
var ce=document.getElementById('ce');
var btn=document.getElementById('btn');
var div=document.getElementById('div');
var num='';
ce.onchange=function(){
num=this.value;
}
btn.onclick=function(){
div.innerHTML=num;
}
</script>
æé纳