document.form2.second2.disabled=false;
--》
document.form1.second2.disabled=false;
===========================
如果不可见可以使
<script language=javascript>function check()
{
if (document.form1.first1.value=="1")
document.form1.second2.style.display = "none";
else
document.form1.second2.style.display = ""
}
</script><form name=form1 >
<select name=first1 onChange="check()">
<option value=1>1
<option value=2>2
</select>
<br>
<select name=second2 style="display:none">
<option value=hehe>hehe
<option value=haha>haha
</select>
</form>
--》
document.form1.second2.disabled=false;
===========================
如果不可见可以使
<script language=javascript>function check()
{
if (document.form1.first1.value=="1")
document.form1.second2.style.display = "none";
else
document.form1.second2.style.display = ""
}
</script><form name=form1 >
<select name=first1 onChange="check()">
<option value=1>1
<option value=2>2
</select>
<br>
<select name=second2 style="display:none">
<option value=hehe>hehe
<option value=haha>haha
</select>
</form>
{
mdiv=document.all(mdiv);
if (document.form1.first1.value=="1")
{
document.form1.second2.disabled=true;
mdiv.style.display="none";
}
else
{
document.form1.second2.disabled=false;
mdiv.style.display="";
}
}
</script><form name=form1 >
<select name=first1 onChange="check('div1')">
<option value=1>1
<option value=2>2
</select>
<br>
<div id=div1 style="">
<select name=second2 disabled>
<option value=hehe>hehe
<option value=haha>haha
</select>
</form>
顺便再问一个问题:
能否控制表格某一行,即<tr>....<tr>, 是否显示?
也是用select来控制。或许应该把这个问题单独作为一个问题提出,这里就便提出了,还望不吝赐教!谢谢!
document.all.tb1.rows[1].style.visibility="hidden"
和上面div一样。