JS: Ajax send forms using the most excellent Formspree » http://formspree.io #snippet

formspree.html

<form id="contact-form" action="//formspree.io/[email protected]" method="post">
	<input type="text" name="Name" placeholder="Name" required>
	<input type="email" name="Email" placeholder="Email" required>
	<textarea name="Message" cols="30" rows="6" placeholder="Message" required></textarea>
	<!-- CONFIG -->
	<input class="is-hidden" type="text" name="_gotcha">
	<input type="hidden" name="_subject" value="Subject">
	<input type="hidden" name="_cc" value="[email protected]">
	<!-- /CONFIG -->
	<input class="submit" type="submit" value="Send">
</form>

formspree.js

var $contactForm = $('#contact-form');

$contactForm.submit(function(e) {
	e.preventDefault();
	var $submit = $('input:submit', $contactForm);
	var defaultSubmitText = $submit.val();

	$.ajax({
		url: '//formspree.io/[email protected]',
		method: 'POST',
		data: $(this).serialize(),
		dataType: 'json',
		beforeSend: function() {
			//$contactForm.append('<div class="alert alert--loading">Sending message…</div>');
			$submit.attr('disabled', true).val('Sending message…');
		},
		success: function(data) {
			//$contactForm.append('<div class="alert alert--success">Message sent!</div>');
			$submit.val('Message sent!');
			setTimeout(function() {
				//$('.alert--success').remove();
				$submit.attr('disabled', false).val(defaultSubmitText);
			}, 5000);
		},
		error: function(err) {
			//$contactForm.find('.alert--loading').hide();
			//$contactForm.append('<div class="alert alert--error">Ops, there was an error.</div>');
			$submit.val('Ops, there was an error.');
			setTimeout(function() {
				//$('.alert--error').remove();
				$submit.attr('disabled', false).val(defaultSubmitText);
			}, 5000);
		}
	});
});