<form name=formtest onsubmit="return checkInput()">
...
</form>
<script language="javascript">
function checkInput()
{
for (var i=1; i <=40; i++)
{
var radios = document.all("question"+i), j;
for (j=0; j < radios.length; j++)
{
if (radios[j].checked)
break;
}
if (j == radios.length)
{
alert("you must select a choice in question " + i);
return false;
}
} return true;
}
</script>
...
</form>
<script language="javascript">
function checkInput()
{
for (var i=1; i <=40; i++)
{
var radios = document.all("question"+i), j;
for (j=0; j < radios.length; j++)
{
if (radios[j].checked)
break;
}
if (j == radios.length)
{
alert("you must select a choice in question " + i);
return false;
}
} return true;
}
</script>
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货