CSRF Double Submit Cookies Pattern Form

csrf-dscp-form.html

<!-- csrf form -->
<form class="mt-3 mb-3" action="/src/service.php" method="POST" onSubmit="appendToken()">
	<!-- csrf hidden input field -->
	<input type="hidden" id="csrf_token" name="csrf_token" value="csrf" />
	
	<div class="form-group">
		<label for="php">Do you like PHP ?</label>
		<input type="text" class="form-control" id="php" name="php" placeholder="not at all... ;) " required autofocus/>
	</div>
	<div class="form-group">
		<label for="demo">Do you like this demo ?</label>
		<input type="text" class="form-control" id="demo" name="demo" placeholder="waiting for your answer .... :D" required/>
	</div>
	<button type="submit" class="btn btn-success btn-block mt-5" name="verify">Submit</button>
</form>
<!-- End csrf form -->