<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>页内式</title>
</head>
<body>
<script>
alert("今天天气很好！");
</script>
</body>
</html>
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