2048/touchDemo.html at master · nullLuli/2048 · GitHub

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<!DOCTYPE html>
<html style="width: 100%;height: 100%;">

	<head>
		<title></title>
		<!--启用viewport-->
		<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
		<style type="text/css">
			.spirit {
				/* 方块的class名称*/
				position: absolute;
				width: 50px;
				height: 50px;
				background-color: black;
				color: red;
			}
		</style>
	</head>

	<body style="height: 100%;margin:0;padding:0">
		<div id="canvas" style="position: relative;width:100%;height: 100%;background-color: darkgrey;">
			<div id="spiritID" class="spirit">
			</div>
		</div>
		<script type="text/javascript">
			var canvas = document.getElementById('canvas'),
				spirit = document.getElementById("spiritID"),
				startX, startY;

			function touchStart(event) {
				event.preventDefault();
				if(!event.touches.length) return;
				var touch = event.touches[0];
				startX = touch.pageX;
				startY = touch.pageY;
			}
			canvas.addEventListener('touchstart', touchStart, false);

			function touchMove(event) {
				event.preventDefault();
				if(!spirit || !event.touches.length) return;
				var touch = event.touches[0],
					x = touch.pageX - startX,
					y = touch.pageY - startY;
				spirit.style.webkitTransform = 'translate(' + x + 'px, ' + y + 'px)';
			}
			canvas.addEventListener('touchmove', touchMove, false);

			function touchEnd(event) {
				if(!spirit) return;
			}

			canvas.addEventListener('touchend', touchEnd, false);
		</script>
		</div>
	</body>

</html>