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js_study
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邮件的正则.html

<!DOCTYPE html>
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>

</body>
<script>
    var emailReg = /\w{3,}(\.\w+)*@[A-z0-9]+(\.\w[A-z]{2,5}){1,2}/;
    var email = "947758663@qq.com";
    console.log(emailReg.test(email));  // true
</script>
</html>