离线存储双12活动

// 示例代码：简单的冲突解决逻辑
function resolveConflict(localData, remoteData) {
    if (localData.version > remoteData.version) {
        return localData;
    } else {
        return remoteData;
    }
}

// 示例代码：检查并清理旧数据
function cleanUpOldData() {
    const cutoffDate = new Date();
    cutoffDate.setDate(cutoffDate.getDate() - 30); // 删除30天前的数据

    for (const key in localStorage) {
        const item = JSON.parse(localStorage.getItem(key));
        if (item.timestamp < cutoffDate) {
            localStorage.removeItem(key);
        }
    }
}

// 示例代码：使用加密存储敏感数据
const CryptoJS = require('crypto-js');

function encryptData(data, secretKey) {
    return CryptoJS.AES.encrypt(JSON.stringify(data), secretKey).toString();
}

function decryptData(encryptedData, secretKey) {
    const bytes = CryptoJS.AES.decrypt(encryptedData, secretKey);
    return JSON.parse(bytes.toString(CryptoJS.enc.Utf8));
}