40-（history对象2）.html

<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			body{
				background: yellow;
			}
		</style>

		<script type="text/javascript">
			
		setTimeout(function(){
			history.back();
		},4000)
			
//			var jg = history.back();//返回前一个访问过的网页，后退
//			document.write(jg);
			
//			var jg = history.go(-1);
//			document.write(jg);
		</script>
		<h1>当前为第二页</h1>
		<a href="40（history对象）.html">跳转到最后一页</a>
	</head>
	<body>
	</body>
</html>