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1. Cookie Cookie

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   function getCookie(cookie_name)

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   {

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       var allCookies = document.cookie;

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       var cookie_pos = allCookies.indexOf(cookie_name);

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       if (cookie_pos != -1)

2. JS 正则 JS 正则

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   //  (?!pattern)为正向否定预查，(?<!pattern)为反向否定预查

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   // 判断密码规则

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   /(?!^[a-z]*$)(?!^[A-Z]*$)(?!^[0-9]*$)(?!^[_\W]*$)^.{8,16}$/.test("12345678q")

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3. 炫酷的样式 炫酷的样式

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       background: linear-gradient(135deg, #5bc8a9 0%, #47b7d1 50%, #6063ef 100%);

4. 正则 NET 正则 NET

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   using System;

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   using System.Collections.Generic;

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   using System.Linq;

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   using System.Text;

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   using System.Text.RegularExpressions;