<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>获取非常规元素</title>
</head>
<body><ul><li>111111111</li><li>111111111</li><li>111111111</li><li>111111111</li></ul><script>// 获取htmlconsole.log(document.documentElement)// 获取headconsole.log(document.head)// 获取bodyconsole.log(document.body)</script>
</body>
</html>在控制台直接打印出来
