// 字面量方式
const regex1 = /abc/;

// 構(gòu)造函數(shù)方式
const regex2 = new RegExp('abc');

/**
 * 郵箱驗證 - 基礎(chǔ)版本
 * 適合大多數(shù)場景
 */
function validateEmailBasic(email) {
    const regex = /^[\w.-]+@[\w.-]+\.\w+$/;
    return regex.test(email);
}

/**
 * 郵箱驗證 - 嚴格版本
 * 符合RFC 5322標準的大部分規(guī)則
 */
function validateEmailStrict(email) {
    const regex = /^[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/;
    return regex.test(email);
}

/**
 * 郵箱驗證 - 實用版本
 * 平衡準確性和性能
 */
function validateEmailPractical(email) {
    const regex = /^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/;
    return regex.test(email);
}

// 測試用例
console.log(validateEmailBasic('user@example.com')); // true
console.log(validateEmailBasic('user.name@example.com')); // true
console.log(validateEmailBasic('user@example.co.uk')); // true
console.log(validateEmailBasic('invalid.email')); // false

/**
 * 中國手機號驗證
 * 支持最新的號段
 */
function validateChinesePhone(phone) {
    const regex = /^1[3-9]\d{9}$/;
    return regex.test(phone);
}

/**
 * 帶區(qū)號的手機號驗證
 */
function validatePhoneWithAreaCode(phone) {
    const regex = /^(?:\+86)?1[3-9]\d{9}$/;
    return regex.test(phone);
}

/**
 * 固話號碼驗證
 */
function validateLandline(phone) {
    const regex = /^(?:0[1-9]\d{1,2}-)?[2-8]\d{6,7}$/;
    return regex.test(phone);
}

// 測試用例
console.log(validateChinesePhone('13800138000')); // true
console.log(validateChinesePhone('+8613800138000')); // false
console.log(validatePhoneWithAreaCode('+8613800138000')); // true
console.log(validateLandline('010-12345678')); // true

/**
 * 身份證號驗證
 * 包含15位和18位身份證號的驗證
 */
function validateIDCard(idCard) {
    // 基本格式驗證
    const regex15 = /^[1-9]\d{7}(?:0[1-9]|1[0-2])(?:0[1-9]|[12]\d|3[01])\d{3}$/;
    const regex18 = /^[1-9]\d{5}(?:18|19|20)\d{2}(?:0[1-9]|1[0-2])(?:0[1-9]|[12]\d|3[01])\d{3}[\dX]$/;
    
    if (idCard.length === 15) {
        return regex15.test(idCard);
    } else if (idCard.length === 18) {
        if (!regex18.test(idCard)) return false;
        
        // 校驗碼驗證
        const weights = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
        const checkCodes = ['1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'];
        
        let sum = 0;
        for (let i = 0; i < 17; i++) {
            sum += parseInt(idCard[i]) * weights[i];
        }
        
        const checkCode = checkCodes[sum % 11];
        return idCard[17].toUpperCase() === checkCode;
    }
    
    return false;
}

// 測試用例
console.log(validateIDCard('11010519900307283X')); // true
console.log(validateIDCard('110105900307283')); // true
console.log(validateIDCard('123456789012345')); // false

/**
 * 密碼強度驗證 - 基礎(chǔ)版本
 */
function validatePasswordBasic(password) {
    // 至少8位，包含字母和數(shù)字
    const regex = /^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d@$!%*#?&]{8,}$/;
    return regex.test(password);
}

/**
 * 密碼強度驗證 - 中級版本
 * 必須包含大小寫字母、數(shù)字、特殊字符中的至少3種
 */
function validatePasswordMedium(password) {
    const regex = /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$/;
    return regex.test(password);
}

/**
 * 密碼強度驗證 - 高級版本
 * 自定義規(guī)則，可配置不同強度等級
 */
function validatePasswordAdvanced(password, options = {}) {
    const {
        minLength = 8,
        maxLength = 20,
        requireUppercase = true,
        requireLowercase = true,
        requireNumbers = true,
        requireSpecialChars = false,
        specialChars = '@$!%*?&'
    } = options;

    if (password.length < minLength || password.length > maxLength) {
        return false;
    }

    let pattern = '^';
    
    if (requireLowercase) pattern += '(?=.*[a-z])';
    if (requireUppercase) pattern += '(?=.*[A-Z])';
    if (requireNumbers) pattern += '(?=.*\\d)';
    if (requireSpecialChars) pattern += `(?=.*[${specialChars.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}])`;
    
    pattern += `[A-Za-z\\d${specialChars.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}]{${minLength},${maxLength}}$`;
    
    const regex = new RegExp(pattern);
    return regex.test(password);
}

// 測試用例
console.log(validatePasswordBasic('password123')); // true
console.log(validatePasswordMedium('Password123!')); // true
console.log(validatePasswordAdvanced('mypassword', {requireUppercase: false})); // true

/**
 * URL驗證 - 基礎(chǔ)版本
 */
function validateURLBasic(url) {
    const regex = /^https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)$/;
    return regex.test(url);
}

/**
 * URL驗證 - 完整版本
 * 支持更多協(xié)議和格式
 */
function validateURLComplete(url) {
    const regex = /^(https?|ftp):\/\/((([\w-]+\.)+[\w-]+)|localhost)(:[0-9]+)?(\/[\w- .\/?%&=]*)?$/;
    return regex.test(url);
}

/**
 * 提取URL中的域名
 */
function extractDomain(url) {
    const regex = /^(?:https?:\/\/)?(?:www\.)?([^\/]+)/;
    const match = url.match(regex);
    return match ? match[1] : null;
}

// 測試用例
console.log(validateURLBasic('https://www.example.com')); // true
console.log(validateURLBasic('http://example.com/path/to/page')); // true
console.log(extractDomain('https://www.example.com/path')); // www.example.com

/**
 * IPv4地址驗證
 */
function validateIPv4(ip) {
    const regex = /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/;
    return regex.test(ip);
}

/**
 * IPv6地址驗證
 */
function validateIPv6(ip) {
    const regex = /^(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$|^::1$|^::$/;
    return regex.test(ip);
}

/**
 * 通用IP地址驗證
 */
function validateIP(ip) {
    return validateIPv4(ip) || validateIPv6(ip);
}

// 測試用例
console.log(validateIPv4('192.168.1.1')); // true
console.log(validateIPv4('256.1.1.1')); // false
console.log(validateIPv6('2001:0db8:85a3:0000:0000:8a2e:0370:7334')); // true

/**
 * 移除所有HTML標簽
 */
function removeAllHTMLTags(html) {
    return html.replace(/<[^>]*>/g, '');
}

/**
 * 移除指定HTML標簽
 */
function removeSpecificHTMLTags(html, tags) {
    const tagPattern = tags.map(tag => `<${tag}[^>]*>|<\\/${tag}>`).join('|');
    const regex = new RegExp(tagPattern, 'gi');
    return html.replace(regex, '');
}

/**
 * 保留指定HTML標簽，移除其他標簽
 */
function keepSpecificHTMLTags(html, allowedTags) {
    const allowedPattern = allowedTags.map(tag => `<${tag}[^>]*>|<\\/${tag}>`).join('|');
    const allTagsPattern = /<[^>]*>/g;
    
    return html.replace(allTagsPattern, (match) => {
        const regex = new RegExp(allowedPattern, 'i');
        return regex.test(match) ? match : '';
    });
}

/**
 * 轉(zhuǎn)義HTML特殊字符
 */
function escapeHTML(html) {
    const escapeMap = {
        '&': '&',
        '<': '<',
        '>': '>',
        '"': '&quot;',
        "'": '&#39;'
    };
    
    return html.replace(/[&<>"']/g, (match) => escapeMap[match]);
}

// 測試用例
const htmlContent = '<div><p>Hello <script>alert("xss")</script>World!</p></div>';
console.log(removeAllHTMLTags(htmlContent)); // "Hello World!"
console.log(removeSpecificHTMLTags(htmlContent, ['script'])); // "<div><p>Hello World!</p></div>"
console.log(keepSpecificHTMLTags(htmlContent, ['p'])); // "<p>Hello World!</p>"

/**
 * 移除非字母數(shù)字字符
 */
function removeNonAlphanumeric(str) {
    return str.replace(/[^a-zA-Z0-9]/g, '');
}

/**
 * 移除非中文字符
 */
function removeNonChinese(str) {
    return str.replace(/[^\u4e00-\u9fa5]/g, '');
}

/**
 * 移除非ASCII字符
 */
function removeNonASCII(str) {
    return str.replace(/[^\x00-\x7F]/g, '');
}

/**
 * 自定義字符過濾
 */
function filterCustomCharacters(str, allowedChars) {
    const pattern = `[^${allowedChars.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')}]`;
    const regex = new RegExp(pattern, 'g');
    return str.replace(regex, '');
}

/**
 * 移除非打印字符
 */
function removeNonPrintable(str) {
    return str.replace(/[\x00-\x1F\x7F-\x9F]/g, '');
}

// 測試用例
console.log(removeNonAlphanumeric('Hello, 世界! 123')); // "Hello123"
console.log(removeNonChinese('Hello, 世界! 123')); // "世界"
console.log(filterCustomCharacters('Hello123!@#', 'a-zA-Z')); // "Hello"

/**
 * 千位分隔符格式化
 */
function formatNumberWithCommas(number) {
    return number.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ',');
}

/**
 * 貨幣格式化
 */
function formatCurrency(amount, currency = 'CNY') {
    const formatted = formatNumberWithCommas(amount);
    const symbols = {
        'CNY': '￥',
        'USD': '$',
        'EUR': '€',
        'GBP': '￡'
    };
    return `${symbols[currency] || ''}${formatted}`;
}

/**
 * 提取字符串中的數(shù)字
 */
function extractNumbers(str) {
    const matches = str.match(/\d+(?:\.\d+)?/g);
    return matches ? matches.map(Number) : [];
}

/**
 * 科學(xué)計數(shù)法轉(zhuǎn)普通數(shù)字
 */
function scientificToDecimal(numStr) {
    const match = numStr.match(/^(\d+(?:\.\d+)?)[eE]([+-]?\d+)$/);
    if (!match) return numStr;
    
    const [, digits, exponent] = match;
    const exp = parseInt(exponent, 10);
    const [integer, decimal = ''] = digits.split('.');
    
    if (exp >= 0) {
        return integer + decimal.padEnd(exp + decimal.length, '0');
    } else {
        const totalLength = integer.length + Math.abs(exp);
        const result = (integer + decimal).padStart(totalLength, '0');
        return '0.' + result.slice(0, totalLength);
    }
}

// 測試用例
console.log(formatNumberWithCommas(1234567)); // "1,234,567"
console.log(formatCurrency(1234567, 'USD')); // "$1,234,567"
console.log(extractNumbers('價格是123.45元，優(yōu)惠了20%')); // [123.45, 20]
console.log(scientificToDecimal('1.23e-3')); // "0.00123"

/**
 * 提取URL參數(shù)
 */
function extractURLParams(url) {
    const params = {};
    const match = url.match(/\?([^#]+)/);
    
    if (match) {
        const searchParams = new URLSearchParams(match[1]);
        for (const [key, value] of searchParams) {
            params[key] = value;
        }
    }
    
    return params;
}

/**
 * 提取CSS屬性
 */
function extractCSSProperties(cssText) {
    const properties = {};
    const regex = /([a-z-]+)\s*:\s*([^;]+);?/gi;
    let match;
    
    while ((match = regex.exec(cssText)) !== null) {
        properties[match[1].trim()] = match[2].trim();
    }
    
    return properties;
}

/**
 * 提取JSON字符串
 */
function extractJSON(str) {
    const jsonRegex = /\{[^{}]*\}/g;
    const matches = str.match(jsonRegex);
    
    if (!matches) return [];
    
    return matches.filter(match => {
        try {
            JSON.parse(match);
            return true;
        } catch {
            return false;
        }
    }).map(json => JSON.parse(json));
}

/**
 * 提取Markdown鏈接
 */
function extractMarkdownLinks(markdown) {
    const regex = /\[([^\]]+)\]\(([^)]+)\)/g;
    const links = [];
    let match;
    
    while ((match = regex.exec(markdown)) !== null) {
        links.push({
            text: match[1],
            url: match[2]
        });
    }
    
    return links;
}

// 測試用例
const url = 'https://example.com?name=John&age=30#section';
console.log(extractURLParams(url)); // { name: 'John', age: '30' }

const css = 'color: red; font-size: 16px; margin: 10px 20px;';
console.log(extractCSSProperties(css)); // { color: 'red', 'font-size': '16px', margin: '10px 20px' }

const markdown = 'Check out [Google](https://google.com) and [GitHub](https://github.com)';
console.log(extractMarkdownLinks(markdown)); // [{ text: 'Google', url: 'https://google.com' }, ...]

/**
 * 智能大小寫轉(zhuǎn)換
 */
function smartCase(str, type = 'camel') {
    switch (type) {
        case 'camel':
            return str.replace(/(?:^\w|[A-Z]|\b\w)/g, (word, index) => {
                return index === 0 ? word.toLowerCase() : word.toUpperCase();
            }).replace(/\s+/g, '');
            
        case 'pascal':
            return str.replace(/(?:^\w|[A-Z]|\b\w)/g, word => word.toUpperCase()).replace(/\s+/g, '');
            
        case 'kebab':
            return str.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase().replace(/\s+/g, '-');
            
        case 'snake':
            return str.replace(/([a-z])([A-Z])/g, '$1_$2').toLowerCase().replace(/\s+/g, '_');
            
        default:
            return str;
    }
}

/**
 * 電話號碼格式化
 */
function formatPhoneNumber(phone, format = 'national') {
    const cleaned = phone.replace(/\D/g, '');
    
    switch (format) {
        case 'national':
            return cleaned.replace(/(\d{3})(\d{4})(\d{4})/, '$1 $2 $3');
        case 'international':
            return cleaned.replace(/(\d{3})(\d{4})(\d{4})/, '+86 $1 $2 $3');
        case 'dash':
            return cleaned.replace(/(\d{3})(\d{4})(\d{4})/, '$1-$2-$3');
        default:
            return cleaned;
    }
}

/**
 * 敏感詞過濾
 */
function filterSensitiveWords(text, sensitiveWords, replacement = '***') {
    if (!Array.isArray(sensitiveWords) || sensitiveWords.length === 0) {
        return text;
    }
    
    const pattern = sensitiveWords.map(word => {
        return word.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
    }).join('|');
    
    const regex = new RegExp(pattern, 'gi');
    return text.replace(regex, replacement);
}

/**
 * 日期格式化
 */
function formatDateString(dateStr, format = 'YYYY-MM-DD') {
    const date = new Date(dateStr);
    if (isNaN(date.getTime())) return dateStr;
    
    const year = date.getFullYear();
    const month = String(date.getMonth() + 1).padStart(2, '0');
    const day = String(date.getDate()).padStart(2, '0');
    const hours = String(date.getHours()).padStart(2, '0');
    const minutes = String(date.getMinutes()).padStart(2, '0');
    const seconds = String(date.getSeconds()).padStart(2, '0');
    
    return format
        .replace('YYYY', year)
        .replace('MM', month)
        .replace('DD', day)
        .replace('HH', hours)
        .replace('mm', minutes)
        .replace('ss', seconds);
}

// 測試用例
console.log(smartCase('hello world', 'camel')); // "helloWorld"
console.log(smartCase('hello world', 'pascal')); // "HelloWorld"
console.log(formatPhoneNumber('13800138000', 'dash')); // "138-0013-8000"
console.log(filterSensitiveWords('這是一段包含敏感詞的文本', ['敏感詞'], '[已過濾]')); // "這是一段包含[已過濾]的文本"

/**
 * 性能對比：貪婪 vs 懶惰匹配
 */
function comparePerformance() {
    const testString = 'a'.repeat(10000) + 'b';
    
    // 貪婪匹配 - 可能導(dǎo)致性能問題
    const greedyRegex = /a.*b/;
    
    // 懶惰匹配 - 更好的性能
    const lazyRegex = /a.*?b/;
    
    // 獨占匹配 - 最佳性能
    const possessiveRegex = /a[^b]*b/;
    
    console.time('貪婪匹配');
    greedyRegex.test(testString);
    console.timeEnd('貪婪匹配');
    
    console.time('懶惰匹配');
    lazyRegex.test(testString);
    console.timeEnd('懶惰匹配');
    
    console.time('獨占匹配');
    possessiveRegex.test(testString);
    console.timeEnd('獨占匹配');
}

/**
 * 預(yù)編譯正則表達式緩存
 */
class RegexCache {
    constructor() {
        this.cache = new Map();
    }
    
    get(pattern, flags = '') {
        const key = `${pattern}_${flags}`;
        
        if (!this.cache.has(key)) {
            this.cache.set(key, new RegExp(pattern, flags));
        }
        
        return this.cache.get(key);
    }
    
    clear() {
        this.cache.clear();
    }
    
    size() {
        return this.cache.size;
    }
}

// 使用示例
const regexCache = new RegexCache();
const emailRegex = regexCache.get('^[\\w.-]+@[\\w.-]+\\.\\w+$');
console.log(emailRegex.test('user@example.com')); // true

/**
 * 選擇合適的量詞
 */
const optimizations = {
    // 使用具體的量詞而不是通用量詞
    specific: {
        phone: /^\d{11}$/, // 而不是 /^\d+$/
        postalCode: /^\d{6}$/, // 而不是 /^\d+$/
    },
    
    // 使用原子組減少回溯
    atomic: {
        // 使用 (?>...) 原子組
        pattern: /(?>a+)b/,
    },
    
    // 使用 possessive 量詞（在某些正則引擎中）
    possessive: {
        // JavaScript 不直接支持，但可以通過字符類模擬
        pattern: /a[^a]*b/,
    }
};

/**
 * 常見錯誤示例
 */
const commonMistakes = {
    // 1. 忘記轉(zhuǎn)義特殊字符
    unescapedDot: /www.example.com/, // 應(yīng)該為 /www\.example\.com/
    
    // 2. 使用錯誤的字符類
    wrongCharClass: /[a-zA-Z0-9_]/, // 應(yīng)該使用 /\w/
    
    // 3. 貪婪匹配導(dǎo)致的問題
    greedyProblem: /<.*>/, // 會匹配整個字符串，應(yīng)該使用 /<.*?>/
    
    // 4. 忘記全局標志
    noGlobalFlag: 'hello world'.replace(/o/, '0'), // 只替換第一個
    
    // 5. 錯誤的邊界匹配
    wrongBoundary: /word/, // 會匹配 "password" 中的 "word"
};

/**
 * 正則表達式調(diào)試工具
 */
class RegexDebugger {
    static test(regex, testCases) {
        console.log(`測試正則表達式: ${regex}`);
        console.log('='.repeat(50));
        
        testCases.forEach(testCase => {
            const result = regex.test(testCase);
            console.log(`"${testCase}" -> ${result}`);
        });
    }
    
    static match(regex, str) {
        console.log(`在 "${str}" 中匹配 ${regex}`);
        console.log('='.repeat(50));
        
        const matches = str.match(regex);
        if (matches) {
            console.log('匹配結(jié)果:', matches);
            
            // 顯示捕獲組
            const execResult = regex.exec(str);
            if (execResult && execResult.length > 1) {
                console.log('捕獲組:');
                for (let i = 1; i < execResult.length; i++) {
                    console.log(`  組 ${i}: ${execResult[i]}`);
                }
            }
        } else {
            console.log('無匹配結(jié)果');
        }
    }
    
    static stepByStep(regex, str) {
        console.log(`逐步匹配: ${regex} vs "${str}"`);
        console.log('='.repeat(50));
        
        let match;
        const globalRegex = new RegExp(regex.source, regex.flags.includes('g') ? regex.flags : regex.flags + 'g');
        
        while ((match = globalRegex.exec(str)) !== null) {
            console.log(`找到匹配: "${match[0]}" 在位置 ${match.index}`);
            console.log(`剩余字符串: "${str.slice(match.index + match[0].length)}"`);
        }
    }
}

// 使用示例
const emailRegex = /^[\w.-]+@[\w.-]+\.\w+$/;
const testEmails = [
    'user@example.com',
    'invalid.email',
    'user.name@example.co.uk',
    '@example.com',
    'user@'
];

RegexDebugger.test(emailRegex, testEmails);

/**
 * 表單驗證庫
 */
class FormValidator {
    constructor() {
        this.rules = new Map();
        this.customValidators = new Map();
        this.setupDefaultRules();
    }
    
    setupDefaultRules() {
        // 內(nèi)置驗證規(guī)則
        this.rules.set('required', {
            pattern: /./,
            message: '此字段為必填項'
        });
        
        this.rules.set('email', {
            pattern: /^[\w.-]+@[\w.-]+\.\w+$/,
            message: '請輸入有效的郵箱地址'
        });
        
        this.rules.set('phone', {
            pattern: /^1[3-9]\d{9}$/,
            message: '請輸入有效的手機號碼'
        });
        
        this.rules.set('idCard', {
            pattern: /^[1-9]\d{5}(?:18|19|20)\d{2}(?:0[1-9]|1[0-2])(?:0[1-9]|[12]\d|3[01])\d{3}[\dX]$/,
            message: '請輸入有效的身份證號碼'
        });
        
        this.rules.set('url', {
            pattern: /^https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)$/,
            message: '請輸入有效的URL地址'
        });
        
        this.rules.set('number', {
            pattern: /^\d+(\.\d+)?$/,
            message: '請輸入有效的數(shù)字'
        });
        
        this.rules.set('integer', {
            pattern: /^\d+$/,
            message: '請輸入有效的整數(shù)'
        });
        
        this.rules.set('chinese', {
            pattern: /^[\u4e00-\u9fa5]+$/,
            message: '只能輸入中文'
        });
        
        this.rules.set('english', {
            pattern: /^[a-zA-Z]+$/,
            message: '只能輸入英文'
        });
        
        this.rules.set('postalCode', {
            pattern: /^\d{6}$/,
            message: '請輸入有效的郵政編碼'
        });
    }
    
    /**
     * 添加自定義驗證規(guī)則
     */
    addRule(name, pattern, message) {
        this.rules.set(name, {
            pattern: pattern instanceof RegExp ? pattern : new RegExp(pattern),
            message: message
        });
        return this;
    }
    
    /**
     * 添加自定義驗證器
     */
    addValidator(name, validator) {
        if (typeof validator !== 'function') {
            throw new Error('驗證器必須是函數(shù)');
        }
        this.customValidators.set(name, validator);
        return this;
    }
    
    /**
     * 驗證單個值
     */
    validate(value, rules) {
        const errors = [];
        
        if (!Array.isArray(rules)) {
            rules = [rules];
        }
        
        for (const rule of rules) {
            const result = this.validateRule(value, rule);
            if (result !== true) {
                errors.push(result);
            }
        }
        
        return {
            valid: errors.length === 0,
            errors: errors
        };
    }
    
    /**
     * 驗證單個規(guī)則
     */
    validateRule(value, rule) {
        // 處理必填驗證
        if (rule === 'required' || (typeof rule === 'object' && rule.type === 'required')) {
            if (value === null || value === undefined || value === '') {
                const message = typeof rule === 'object' && rule.message ? rule.message : this.rules.get('required').message;
                return message;
            }
            return true;
        }
        
        // 如果值為空且不是必填項，跳過驗證
        if (value === null || value === undefined || value === '') {
            return true;
        }
        
        // 處理內(nèi)置規(guī)則
        if (typeof rule === 'string') {
            const ruleConfig = this.rules.get(rule);
            if (!ruleConfig) {
                throw new Error(`未知的驗證規(guī)則: ${rule}`);
            }
            
            if (!ruleConfig.pattern.test(value)) {
                return ruleConfig.message;
            }
            return true;
        }
        
        // 處理正則表達式
        if (rule instanceof RegExp) {
            if (!rule.test(value)) {
                return '格式不正確';
            }
            return true;
        }
        
        // 處理對象形式的規(guī)則
        if (typeof rule === 'object') {
            // 處理正則表達式規(guī)則
            if (rule.pattern) {
                const pattern = rule.pattern instanceof RegExp ? rule.pattern : new RegExp(rule.pattern);
                if (!pattern.test(value)) {
                    return rule.message || '格式不正確';
                }
                return true;
            }
            
            // 處理自定義驗證器
            if (rule.validator) {
                const result = rule.validator(value);
                if (result !== true) {
                    return result || '驗證失敗';
                }
                return true;
            }
            
            // 處理內(nèi)置規(guī)則
            if (rule.type) {
                const ruleConfig = this.rules.get(rule.type);
                if (!ruleConfig) {
                    throw new Error(`未知的驗證規(guī)則: ${rule.type}`);
                }
                
                if (!ruleConfig.pattern.test(value)) {
                    return rule.message || ruleConfig.message;
                }
                return true;
            }
            
            // 處理長度驗證
            if (rule.minLength !== undefined || rule.maxLength !== undefined) {
                const length = value.length;
                
                if (rule.minLength !== undefined && length < rule.minLength) {
                    return rule.message || `長度不能少于${rule.minLength}個字符`;
                }
                
                if (rule.maxLength !== undefined && length > rule.maxLength) {
                    return rule.message || `長度不能超過${rule.maxLength}個字符`;
                }
                return true;
            }
            
            // 處理范圍驗證
            if (rule.min !== undefined || rule.max !== undefined) {
                const num = Number(value);
                
                if (isNaN(num)) {
                    return '請輸入有效的數(shù)字';
                }
                
                if (rule.min !== undefined && num < rule.min) {
                    return rule.message || `數(shù)值不能小于${rule.min}`;
                }
                
                if (rule.max !== undefined && num > rule.max) {
                    return rule.message || `數(shù)值不能大于${rule.max}`;
                }
                return true;
            }
        }
        
        throw new Error(`不支持的驗證規(guī)則格式`);
    }
    
    /**
     * 驗證整個表單
     */
    validateForm(formData, schema) {
        const results = {};
        let isValid = true;
        
        for (const [field, rules] of Object.entries(schema)) {
            const value = formData[field];
            const result = this.validate(value, rules);
            
            results[field] = result;
            if (!result.valid) {
                isValid = false;
            }
        }
        
        return {
            valid: isValid,
            fields: results
        };
    }
}

// 使用示例
const validator = new FormValidator();

// 添加自定義規(guī)則
validator.addRule('username', /^[a-zA-Z][a-zA-Z0-9_]{5,17}$/, '用戶名必須以字母開頭，6-18位，只能包含字母、數(shù)字、下劃線');

// 添加自定義驗證器
validator.addValidator('passwordMatch', (value, formData) => {
    return value === formData.password ? true : '兩次輸入的密碼不一致';
});

// 驗證單個值
console.log(validator.validate('user@example.com', 'email'));
console.log(validator.validate('13800138000', 'phone'));

// 驗證整個表單
const formData = {
    username: 'john_doe',
    email: 'john@example.com',
    phone: '13800138000',
    password: 'Password123!',
    confirmPassword: 'Password123!',
    age: 25
};

const schema = {
    username: ['required', 'username'],
    email: ['required', 'email'],
    phone: ['required', 'phone'],
    password: [
        'required',
        { pattern: /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$/, message: '密碼必須包含大小寫字母、數(shù)字和特殊字符，至少8位' }
    ],
    confirmPassword: [
        'required',
        { validator: (value, data) => value === data.password ? true : '兩次輸入的密碼不一致' }
    ],
    age: [
        'required',
        { min: 18, max: 100, message: '年齡必須在18-100歲之間' }
    ]
};

console.log(validator.validateForm(formData, schema));

/**
 * 性能測試
 */
function performanceTest() {
    const validator = new FormValidator();
    const iterations = 10000;
    
    // 測試數(shù)據(jù)
    const testData = {
        valid_email: 'user@example.com',
        invalid_email: 'invalid.email',
        valid_phone: '13800138000',
        invalid_phone: '12345678901',
        valid_url: 'https://www.example.com',
        invalid_url: 'not-a-url'
    };
    
    console.log(`開始性能測試，迭代次數(shù): ${iterations}`);
    console.log('='.repeat(50));
    
    // 郵箱驗證性能測試
    console.time('郵箱驗證 (valid)');
    for (let i = 0; i < iterations; i++) {
        validator.validate(testData.valid_email, 'email');
    }
    console.timeEnd('郵箱驗證 (valid)');
    
    console.time('郵箱驗證 (invalid)');
    for (let i = 0; i < iterations; i++) {
        validator.validate(testData.invalid_email, 'email');
    }
    console.timeEnd('郵箱驗證 (invalid)');
    
    // 手機號驗證性能測試
    console.time('手機號驗證 (valid)');
    for (let i = 0; i < iterations; i++) {
        validator.validate(testData.valid_phone, 'phone');
    }
    console.timeEnd('手機號驗證 (valid)');
    
    console.time('手機號驗證 (invalid)');
    for (let i = 0; i < iterations; i++) {
        validator.validate(testData.invalid_phone, 'phone');
    }
    console.timeEnd('手機號驗證 (invalid)');
    
    // URL驗證性能測試
    console.time('URL驗證 (valid)');
    for (let i = 0; i < iterations; i++) {
        validator.validate(testData.valid_url, 'url');
    }
    console.timeEnd('URL驗證 (valid)');
    
    console.time('URL驗證 (invalid)');
    for (let i = 0; i < iterations; i++) {
        validator.validate(testData.invalid_url, 'url');
    }
    console.timeEnd('URL驗證 (invalid)');
}

// 運行性能測試
performanceTest();