JanCHikUs

<span id="<?php echo $todo['id']?>" onclick="removeToDo(this)" class="remove-to-do">x</span>

<script>
	
	function removeToDo(e) {
	
		var response = await (await fetch('app/remove.php', {
		  method: 'POST',
		  headers: { 'Content-Type' : 'application/x-www-form-urlencoded; charset=UTF-8' },
		  body: new URLSearchParams({ id: e.getAttribute('id') }).toString()
		})).text();
		
		console.log('Ответ сервера', response);
		
	}
	
</script>