<SCRIPT LANGUAGE="JavaScript">
<!--
function func(){
test.submit();
}//-->
</SCRIPT>
<form name = "test">
<select name="select1" onchange = "func()">
<option value="同意">同意
<option value="不同意">不同意
</select>
<select name="select2">
<option value="1">1
<option value="2">2
</select>
<input type="button" name="button1" value="?定">
</form>
在select1里家一个属性onchange,只要select1选择就对FORM进行提交,提交以后可以在JSP里面判断select1是选了"同意"还是"不同意",如果不同意那么下拉筐select2和按键button1这段代码不要输出就可以了.
<!--
function func(){
test.submit();
}//-->
</SCRIPT>
<form name = "test">
<select name="select1" onchange = "func()">
<option value="同意">同意
<option value="不同意">不同意
</select>
<select name="select2">
<option value="1">1
<option value="2">2
</select>
<input type="button" name="button1" value="?定">
</form>
在select1里家一个属性onchange,只要select1选择就对FORM进行提交,提交以后可以在JSP里面判断select1是选了"同意"还是"不同意",如果不同意那么下拉筐select2和按键button1这段代码不要输出就可以了.
<option value="同意">同意
<option value="不同意">不同意
</select>
<select name="select2">
<option value="1">1
<option value="2">2
</select>
<input type="button" name="button1" value="确定"><script>
function sel(_Obj)
{
if (_Obj.selectedIndex == 1)
{
select2.style.visibility = "hidden";
button1.style.visibility = "hidden";
}
}
</script>
<script>
function sel(_Obj)
{
if (_Obj.selectedIndex == 1)
{
select2.style.visibility = "hidden";
button1.style.visibility = "hidden";
}else
{
select2.style.visibility = "visible";
button1.style.visibility = "visible"; }}
</script>