高手教程在线编辑器

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<html>
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<title>高手教程(study.p2hp.com)</title>
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<script>
document.write("版本信息: " + navigator.appVersion);
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>高手教程(study.p2hp.com)</title>
</head>
<body>
​
<script>
document.write("版本信息: " + navigator.appVersion);
</script>
​
</body>
</html>