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@@ -0,0 +1,31 @@
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+<!DOCTYPE html>
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+<html lang="en">
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+<head>
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+ <meta charset="UTF-8">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+</head>
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+<body>
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+ <script>
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+ // 1.手机号脱敏 13789430987 => 137****0987
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+ var str = '13789430987';
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+ const reg = /^(1\d{2})\d{4}(\d{4})$/
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+ console.log(reg.test(str))
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+ console.log(str.replace(reg,'$1****$2'))
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+ // 2.密码匹配 (6-16字母、数字、下划线)
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+ var str ='hello123456';
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+ const reg1 = /^\w{6,16}$/
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+ // const reg1 = /^[a-zA-Z0-9_]{6,16}$/
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+ console.log(reg1.test(str))
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+ // 3.匹配16进制颜色 #ff0000 #0f0
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+ const str1 = "#f00";
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+ const reg2 = /^#([a-fA-f0-9]{6})|([a-fA-f0-9]{3})$/
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+ console.log(reg2.test(str1))
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+ // 4.匹配24小时时间 23:59 20:12 08:35
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+ const reg4 = /^([0-1][0-9])|([2][0-3]):[0-5][0-9]$/;
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+ console.log(reg4.test("12:36"))
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+ console.log(reg4.test("20:12"))
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+ console.log(reg4.test("24:00"))
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+ </script>
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+</body>
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+</html>
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