注册表单
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>用户注册页面</title>
<script type="text/javascript">
//验证表单
function run() {
//用户名不能为空
//获取用户名的值
//var name=document.getElementById("nameId").value;
//var name=document.form1.username.value;
var name = document.getElementById("nameId").value;
if (name.trim() == "") {
alert("用户名不能为空");
return false;
}
//密码多于6位
var pwd = document.form1.password.value;
if (pwd.trim().length < 6) {
alert("至少6密码");
return false;
}
//确认密码一致
var repwd = document.form1.repassword.value;
if (repwd != pwd) {
alert("密码不一致");
return false;
}
//邮箱规则
var email = document.form1.email.value;
//正则表达式
if(!/^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/.test(email)){
alert("邮箱错误");
return false;
}
}
</script>
</head>
<body>
<form name="form1" action="https://www.baidu.com" onsubmit="return run()">
<table border="1" width="40%" cellpadding="10" align="center">
<th colspan="2">用户注册页面</th>
<tr>
<td>用户名：</td>
<td><input type="text" name="username" id="nameId" /></td>
</tr>
<tr>
<td>密码：</td>
<td><input type="password" name="password" /></td>
</tr>
<tr>
<td>确认密码：</td>
<td><input type="password" name="repassword" /></td>
</tr>
<tr>
<td>邮箱：</td>
<td><input type="eamil" name="email" /></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="submit" value="注册" /></td>
</tr>
</table>
</form>
</body>
</html>
