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请教一个onchange事件

xiapi 发布于 2008-04-14 18:29， 622 次点击

<select name=bbb onchange="viewaaa()">
<option value="">请选择 </option>
<option value="1">1</option>
<option value="2">2</option>
</select>
<div id=aaa style="display:none;">fffffffffffffff</div>

当选择1时，显示<div id=aaa style="display:none;">fffffffffffffff</div>
选择其它是不显示.

2 回复

#2

yms1232008-04-14 18:47

<script language="javascript">
function viewaaa(val)
{
   var divObj=document.getElementById("aaa");//定位Div
   //判断是否选择了1
   if(val=="1")
      divObj.style.display="";
   else
      divObj.style.display="none";
}
</script>

<select name=bbb onchange="viewaaa(this.options[this.selectedIndex].value);">
<option value="">请选择 </option>
<option value="1">1</option>
<option value="2">2</option>
</select>
<div id=aaa style="display:none;">fffffffffffffff</div>

#3

xiapi2008-04-14 18:56

多谢版主

1