edu-mini/utils/storage.js

import config from "../model/config"
import dayjs from "dayjs";

const EXSPACE = "ex_space";
const isUp = false;// 升级本地存储  新增过期失效功能  默认不打开 设置为true后生效
export default {
    getStorage(space = config.NAMESPACE) {
        const res = wx.getStorageSync(space);
        return JSON.parse(res || "{}");
    },
    setItem(key, val, ex) {
        const storage = this.getStorage();
        storage[key] = val;
        if (isUp && ex){
            let exObj = this.getStorage(EXSPACE);
            exObj[key] = dayjs().valueOf() +ex;
            wx.setStorageSync(EXSPACE, JSON.stringify(exObj))
        }
        wx.setStorageSync(config.NAMESPACE, JSON.stringify(storage))

    },
    getItem(key) {
        const storage = this.getStorage();
        const exObj = this.getStorage(EXSPACE);
        if (isUp){
            if (exObj && exObj[key] ) {
                if (exObj[key] > dayjs().valueOf()){

                }else {
                    this.clearItem(key)
                    return null;
                }
            }
        }
        return storage[key];
    },
    clearItem(key) {
        const storage = this.getStorage();
        delete storage[key]
        wx.setStorageSync(config.NAMESPACE, JSON.stringify(storage))
    },
    clearAll() {
        wx.removeStorageSync(config.NAMESPACE)
    }
}