@10yun/cv-js-utils/plugins/storageLocalForage.js

常用 js-utils 工具类库

import localforage from 'localforage/src/localforage.js';

/**
 * =============================================================================
 * *****************************   localForage   ******************************
 * =============================================================================
 */
class StorageIndexDB {
  constructor(options) {
    this.db_name = options.db_name || 'cvjs';
    localforage.config({
      name: this.db_name,
      storeName: 'common'
    });
    /**
     * 缓存的key
     */
    this.keyExpired = {};
    this.keyGroup = [];

    this.__open_log = false;
    this.__timer = {};
  }

  async idbTest() {
    try {
      if (cvUtils.isDevice_ios()) {
        await localforage.setItem('__test__', $A.Time());
      }
      this.__open_log && console.log('IDBTest OK');
    } catch (error) {
      if (this.__open_log) {
        console.error('IDBTest Error: ', error);
        ElMessageBox.alert(error.message, '温馨提示', {
          // autofocus: false,
          confirmButtonText: 'OK'
        }).then(() => {
          $A.reloadUrl();
        });
      } else {
        $A.reloadUrl();
      }
    }
  }
  idbSave(key, value, delay = 100) {
    if (typeof this.__timer[key] !== 'undefined') {
      clearTimeout(this.__timer[key]);
      delete this.__timer[key];
    }
    this.__timer[key] = setTimeout(async (_) => {
      // console.log('---idbSave--', key, value);
      let parseValue = JSON.parse(JSON.stringify(value));
      await localforage.setItem(key, parseValue);
    }, delay);
  }

  idbGetItem(key) {
    return localforage.getItem(key);
  }
  idbSetItem(key, value) {
    // console.log('---idbSetItem--', key, value);
    let parseValue = '';
    if (value && value != 'undefined') {
      parseValue = JSON.parse(JSON.stringify(value));
    }
    return localforage.setItem(key, parseValue);
  }
  idbDelItem(key) {
    // return localforage.removeItem(key);
    localforage.removeItem(key).then((_) => {});
  }
  idbClear() {
    return localforage.clear();
  }

  async idbGetString(key, def = '') {
    const value = await this.idbGetItem(key);
    return typeof value === 'string' || typeof value === 'number' ? value : def;
  }

  async idbGetInt(key, def = 0) {
    const value = await this.idbGetItem(key);
    return typeof value === 'number' ? value : def;
  }

  async idbGetBoolean(key, def = false) {
    const value = await this.idbGetItem(key);
    return typeof value === 'boolean' ? value : def;
  }

  async idbGetArray(key, def = []) {
    const value = await this.idbGetItem(key);
    return cvUtils.isTypeArray(value) ? value : def;
  }

  async idbGetJson(key, def = {}) {
    const value = await this.idbGetItem(key);
    return cvUtils.isTypeJson(value) ? value : def;
  }
}

export default StorageIndexDB;