Recupérer entrées

<body>
		
		<form>
			
			<label for="check1">Check 1</label>	<input type="checkbox" value="case1" />
			<br />
			<label for="check2">Check 2</label>	<input type="checkbox" value="case2" />
			<br />
			<input type="button" id="handle" />
			
		</form>
		
		<script type="text/javascript">
		
			var o = document;

			var check = o.getElementsByTagName("input");

			o.getElementById("handle").onclick = function() {

				for (var i = 0, l = check.length; i < l; i++) {

					var z = check[i];

					if (z.type == "checkbox" && z.checked) {

						alert(z.value);
					}
				}
			}
		</script>
	</body>