Untitled

<!DOCTYPE html>
<html>
	<head>
		<title>Ma page</title>
		<meta charset="UTF-8">
		<style>
/*			Intructions CSS ici*/
		</style>
	</head>
	<body>

		<form>
			<input id="num"type="text"name="Numéro du cours"value="717">
			<button id="envoyer"type="button">Soumettre</button>
		</form>

		<script>
			var btnSubmit = document.getElementById("envoyer")
			var inputNumCours = document.getElementById("num")

			btnSubmit.addEventListener("click", function (e) {
				var numCours = parseInt(inputNumCours.value);
				console.log(numCours);
			});
		</script>

	</body>
</html>