jQuery: Form validator

form-validator.js

jQuery(document).ready(function() {
	jQuery('form#contactForm').submit(function() {
		jQuery('form#contactForm .error').remove();
		var hasError = false;
		jQuery('.requiredField').each(function() {
			if(jQuery.trim(jQuery(this).val()) == '') {
				//var labelText = jQuery(this).prev('label').text();
				jQuery(this).parent().append('<span class="error text-error">&larr; Required field</span>');
				hasError = true;
			}
			
			
			else if(jQuery(this).hasClass('email')) {
				var emailReg = /^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/;
				if(!emailReg.test(jQuery.trim(jQuery(this).val()))) {
					//var labelText = jQuery(this).prev('label').text();
					jQuery(this).parent().append('<span class="error text-error">&larr; Invalid Email.</span>');
					hasError = true;
				}
			}
			

			else if (jQuery(this).hasClass('captcha')){
				if(jQuery.trim(jQuery(this).val()) != '10') {
				jQuery(this).parent().append('<span class="error text-error">&larr; Are you a spammer?</span>');
				hasError = true;
			}
			}
		});

		
		if(!hasError) {
			jQuery('#thankyou').append('<img id="contact-loader" src="http://www.justinwhall.com/wp-content/themes/justinwhall/images/loader.gif" alt="Loading&hellip;" height="41" width="41" />');
			
			var formInput = jQuery(this).serialize();
			jQuery.post(jQuery(this).attr('action'),formInput, function(data){
				jQuery('form#contactForm').slideUp("fast", function() {				   
					jQuery(this).before('<div class="opacity-wrap thanks-wrap"><p class="thanks"><strong>Thanks!</strong> Your form was submitted successfully. I check my email frequently, so expect to hear from me shortly.</p></div>');
					jQuery('#contact-loader').fadeOut('slow');
				});
			});
		}
		
		return false;
		
	});
});