Untitled

<!DOCTYPE html>
<html>
	<head>
		<script type="text/javascript">
			function validate() {
				// Get value of element
				var fullName = document.getElementById('fullName').value;
				var telPhone = document.getElementById('telPhone').value;
				var email = document.getElementById('email').value;
				var age = document.getElementById('age').value;
				// Check value
				var warning = ''; var flag = false;
				if (fullName == '') {
					warning += 'Full Name is empty. Please insert your full name.\n';
					flag = true;
				}
				if (telPhone == '' || /^\d{10}$/.test(telPhone) == false) {
					warning += 'Your number phone is not correctly/empty. Please insert your phone number.\n';
					flag = true;
				}
				if (email == '' || /^[^@]+@[^@]+\.[^@]+$/.test(email) == false) {
					warning += 'Your email is not correctly/empty. Please insert your email.\n';
					flag = true;
				}
				if (age == '' || /^\d{1}$/.test(age) == false) {
					warning += 'Your age is not correctly/empty. Please insert your age.\n';
					flag = true;
				}
				// Warning
				if (flag == true) {
					alert(warning);
				}
				else {
					var string = 'FORM\n';
						string += 'Full name: ' + fullName + '\n';
						string += 'Tel: ' + telPhone + '\n';
						string += 'Email: ' + email + '\n';
						string += 'Age: ' + age + '\n';
					alert(string);
				}
			}

			function reset() {
				document.getElementById('fullName').value = '';
				document.getElementById('telPhone').value = '';
				document.getElementById('email').value = '';
				document.getElementById('age').value = '';
			}
		</script>
	</head>
	<body>
		<table>
			<tr>
				<b>REGISTER FORM</b>
			</tr>
			<tr>
				<td>Full Name</td>
				<td><input id="fullName" type="text" /></td>
			</tr>
			<tr>
				<td>Tel</td>
				<td><input id="telPhone" type="text" /></td>
			</tr>
			<tr>
				<td>Email</td>
				<td><input id="email" type="text" /></td>
			</tr>
			<tr>
				<td>Age</td>
				<td><input id="age" type="text" /></td>
			</tr>
			<tr>
				<td><input type="button" onclick="validate();" value="Submit" /></td>
				<td><input type="button" onclick="reset();" value="Reset" /></td>
			</tr>
		</table>
</html>