function mm(val)
{
var s = document.formName.mys;
for(var i=0; i<s.options.length; i++)
{
if(s.options[i].value == val)
{
s.selectedIndex = i;
return s.option[i];
}
}
return null;
}
{
var s = document.formName.mys;
for(var i=0; i<s.options.length; i++)
{
if(s.options[i].value == val)
{
s.selectedIndex = i;
return s.option[i];
}
}
return null;
}
document.formName.mys.value = "3"; //这样就搞定了
这一句写在哪?
<FORM METHOD=POST ACTION="" name="myform">
<SELECT NAME="mys">
<option value="1">aaaaaaaaa</option>
<option value="2">bbbbbb</option>
<option value="3">cccccccccc</option>
<option value="4">dddddddddd</option>
<option value="5">eeeeeeee</option>
</SELECT></FORM>
<SCRIPT LANGUAGE="JavaScript">
<!--
document.myform.mys.value="3"
//-->
</SCRIPT>