<body>
<form >
请输入内容:
<input pattern="[A-Z]{3}" name="part">
<input type="submit">
</form>
</body>
#我是用my
eclipse
<meta name="keywords" content="keyword1,keyword2,keyword3"> <meta name="description" content="this is my page"> <meta name="content-type" content="text/html; charset=UTF-8">
<meta name="content-type" content="text/html; charset=UTF-8">
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
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