Question

ASP中用图片做提交按钮

ASP中用图片做提交按钮,做一个在线定单,上面已经用JAVASCRIPT做过计算,但我还要验证表单项是否为空,我该怎么写?

Answer 1

<script>
function form1_onsubmit()
{
if (document.form1.user.value =="")
{ alert("用户名不能为空!");
return false;
}
if (document.form1.pass.value =="")
{ alert("密码不能为空!");
return false;
}
}
</script>
<input type=image src="images/regyes.gif" onClick = " return form1_onsubmit()" />