Html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>转动的风扇</title>
<link rel="stylesheet" href="../css/20241114.css">
</head>
<body>
<div class="main">
<img src="image/20241114/fan-blade.png" alt="" srcset="">
<button onclick="fanOn()">ON </button>
<button onclick="fanOff()">OFF</button>
<button onclick="fanBtn1()">1</button>
<button onclick="fanBtn2()">2</button>
<button onclick="fanBtn3()">3</button>
</div>
<script src="../js/20241114.js"></script>
</body>
</html>