<html>
<head><title>表单测试</title>
<script language="javascript">
function checkuser(){
var name="";
name=document.myform.username.value;
if(name.length==0){
alert("用户名不能为空！！");
return false;
}else{
return true;
}
}
function checkpassword(){
var name="";
name=document.myform.password.value;
if(name.length==0){
alert("密码不能为空！！");
return false;
}else{
return true;
}
}
</script></head>
<body><center>
<form action="#" name="myform" method="post" onsubmit="return checkuser();" onsubmit="return checkpassword();" >
用户名：<input type="text" name="username" value=""><br>
密码：<input type="password" name="password" value=""><br>
再输入一次密码：<input type="password" name="password" value=""><br>
性别：<input type="radio" name="sex" value="man">男
<input type="radio" name="sex" value="woman">女<br>
出生年月：<input type="text" name="year" value="">年
<select name="month">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
<option value="7">7</option>
<option value="8">8</option>
<option value="9">9</option>
<option value="10">10</option>
<option value="11">11</option>
<option value="12">12</option>
</select>月
<input type="text" name="day" value="">日<br>
电子邮件：<input type="text" name="e-mail" value=""><br>
家庭住址：<input type="text" name="address" value=""><br>
喜欢吃的水果：
<input type="checkbox" name="fruit" value="apple">苹果
<input type="checkbox" name="fruit" value="pear">梨
<input type="checkbox" name="fruit" value="banana">香蕉<br>
<input type="submit" name="submit" value="提交">
<input type="submit" name="submit" value="重置"><br>
</form></center>
</body>
</html>