<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<script type="text/javascript">
function check(){
var name2=document.formname.name1;
var password2=document.formname.password1;
if(name2.value==""){
alert("用户名不能为空");
name2.focus();
return false;
}
if(password2.value==""){
alert("密码不能为空")
password2.focus();
return false;
}
}
</script>
</head>
<body>
<form action="5秒后跳转.html" name="formname" method="get" onsubmit="return check()">
用户名:<input type="text" name="name1" /><br />
密码:<input type="password" name="password1" /><br />
<input type="submit" name="提交1" value="提交" />
</form>
</body>
</html>
