lovecoding
/
class


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h1>二级页面</h1>
    <h3>我是一个附页</h3>
    <button id="home">回到主页</button>
    <a href="./5.2_history.html">去附页</a>
    <script>
        var home = document.getElementById("home");
        home.onclick = function () {
            history.back()
        }
    </script>
</body>
</html>