js脚本验证

<script language="JavaScript">
function checkform(frmAnnounce)
{
if (frmAnnounce.name.value=="")
{
alert("请输入姓名!");
frmAnnounce.name.focus();
return false;
}
if (frmAnnounce.password.value=="")
{
alert("请输入密码!");
frmAnnounce.password.focus();
return false;
}
if (frmAnnounce.password1.value=="")
{
alert("请输入确认密码!");
frmAnnounce.password1.focus();
return false;
}
if (frmAnnounce.password1.value!=frmAnnounce.password.value)
{
alert("两次密码必须一致!");
frmAnnounce.password1.focus();
return false;
}

frmAnnounce.submit();
}

</script>