Validate کردن فرم

کدی عالی برای validate کردن فرم

کد کامل:

<!DOCTYPE html>
<html>
<!-- Softafzar.net -->
<head>
	<title>Form Validation</title>
	<meta charset="utf-8" />
	<script type="text/javascript">
		var ck_name = /^[A-Za-z0-9 ]{3,20}$/;
		var ck_email = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
		var ck_username = /^[A-Za-z0-9_]{1,20}$/;
		var ck_password =  /^[A-Za-z0-9!@#$%^&*()_]{6,20}$/;

		function validate(form){
		var name = form.name.value;
		var email = form.email.value;
		var username = form.username.value;
		var password = form.password.value;
		var errors = [];
		 
		 if (!ck_name.test(name)) {
		  errors[errors.length] = "Enter Correct Name .";
		 }
		 
		 if (!ck_email.test(email)) {
		  errors[errors.length] = "You must enter a valid email address.";
		 }
		 
		 if (!ck_username.test(username)) {
		  errors[errors.length] = "You valid UserName no special char .";
		 }
		 
		 if (!ck_password.test(password)) {
		  errors[errors.length] = "You must enter a valid Password ";
		 }

		 if (errors.length > 0) {

		  reportErrors(errors);
		  return false;
		 }
		  return true;
		}
		function reportErrors(errors){
		 var msg = "Please Enter Valide Data...\n";
		 for (var i = 0; i<errors.length; i++) {
		 var numError = i + 1;
		  msg += "\n" + numError + ". " + errors[i];
		}
		 alert(msg);
		}
	</script>
</head>
<body>
		<form method="post" action="a.php" onSubmit="return validate(this);" name="form">
			<input type="text" id="name" name="name" value="" placeholder="Enter your name"  />
			<input type="email" id="email" name="email" value="" placeholder="Enter your e-mail address"  />
			<input type="text" id="username" name="username" value="" placeholder="Enter username"  />
			<input type="password" id="password" name="password" value="" placeholder="Enter password"  />
			<input type="submit" />
		</form>

		</body>
</html>

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