html--简单登录注册页面

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		
		<script type="text/javascript">
			function check(){
				var emailMsg = document.getElementById("emailMsg");
				var passwordMsg = document.getElementById("passwordMsg");
				
				var username = document.getElementById("username");
				var usernameMsg = document.getElementById("usernameMsg");
				
				var isPass = true;
				
				var length = username.value.length;
				if(length<3 || length>6){
//					alert("用户名长度必须是3-6位");
					usernameMsg.innerText= "用户名长度必须是3-6位";
					isPass = false;
				}else{
					usernameMsg.innerText= "";
				}
				
				var email = document.getElementById("email").value;
				var p = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
				if(p.test(email)==false){
//					alert("邮箱格式不正确");
					emailMsg.innerText="邮箱格式不正确";
					isPass = false;
				}else{
					emailMsg.innerText="";
				}
				
				var password = document.getElementById("password").value;
				var rePassword = document.getElementById("rePassword").value;
				if(password.length<6 || password.length>10){
//					alert("密码必须在6-10位之间");
					passwordMsg.innerText="密码必须在6-10位之间"
					isPass=false;
				}else{
					passwordMsg.innerText=""
					if(password!=rePassword){
//						alert("两次输入密码不一致");
						passwordMsg.innerText="两次输入密码不一致";
						isPass=false;
					}else{
						passwordMsg.innerText="";
					}
				}
				
//				if(isPass==false){
//					return false;
//				}else{
//					return true;	
//				}
				return isPass;
			}
			//onblur失去焦点的时候调用
			function checkUsername(username){
				var usernameMsg = document.getElementById("usernameMsg");
				
				var length = username.value.length;
				if(length<3 || length>6){
					usernameMsg.innerText= "用户名长度必须是3-6位";
				}else{
					usernameMsg.innerText= "";
				}
			}
			function checkEmail(email){
				var emailMsg = document.getElementById("emailMsg");
				var p = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/;
				if(p.test(email.value)==false){
					emailMsg.innerText="邮箱格式不正确";
				}else{
					emailMsg.innerText="";
				}
			}
			function checkPassword(){
				var passwordMsg = document.getElementById("passwordMsg");
				var password = document.getElementById("password");
				var rePassword = document.getElementById("rePassword").value;
				if(password.value.length<6 || password.value.length>10){
					passwordMsg.innerText="密码必须在6-10位之间"
					isPass=false;
				}else{
					passwordMsg.innerText=""
					if(password.value!=rePassword){
						passwordMsg.innerText="两次输入密码不一致";
						isPass=false;
					}else{
						passwordMsg.innerText="";
					}
				}
			}
		</script>
	</head>
	<body>
		
		<form action="register.jsp" onsubmit="return check()">
			<table border="1" width="500px" height="500px">
				<tr>
					<td colspan="2" align="center">注册</td>
				</tr>
				<tr>
					<td align="right">用户名:</td><td align="left"> <input type="text" id="username" onblur="checkUsername(this)" />
					<font color="red" id="usernameMsg"></font>
					</td>
				</tr>
				<tr>
					<td align="right">邮箱：</td><td> <input type="text" id="email" onblur="checkEmail(this)" /><font color="red" id="emailMsg"></font> </td>
				</tr>
				<tr>
					<td align="right">密码：</td><td> <input type="password" id="password" onblur="checkPassword()" /><font color="red" id="passwordMsg"></font> </td>
				</tr>
				<tr>
					<td align="right">重复密码：</td><td> <input type="password" id="rePassword" onblur="checkPassword()"/>  </td>
				</tr>
				<tr>
					<td colspan="2" align="center"> <input type="submit" value="注册" /> </td>
				</tr>
			</table>
		</form>
		<!--DOM Document Object Model-->
	</body>
</html>
html--简单登录注册页面

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