要看你在什么事件里执行这句语句了.
<form name=form1>
<input name=a onkeyup="form1.b.value=this.value"><br>
<input name=b>
</form>
<form name=form1>
<input name=a onkeyup="form1.b.value=this.value"><br>
<input name=b>
</form>
function CompanyTypeChanged()
{
if (form1.selectCompany.options[form1.selectCompany.SelectedIndex].value=="个人")
{
form1.CompanyName.value="个人";
}
else
{
form1.CompanyName.value="hehe";
}
}
选择域的声明如下:
<select name="selectCompany" class="editbox2" id="selectCompany" onchange="CompanyTypeChanged()">
<option value="个人" selected>个人</option>
<option value="医院">医院</option>
<option value="公司">公司</option>
<option value="其他机构">其他机构</option>
</select>
SelectedIndex
==>
selectedIndex