LocalStorage

Storage.js

class Storage {

  /**
   * Add to LocalStorage
   * @param {*} key 
   * @param {*} value 
   */
  static add(key, value) {
    let storage = this.get(key);
    if (storage !== null) {
      if (Array.isArray(storage)) {
        storage.push(value)
      } else {
        storage = [storage];
      }
      this.set(key, storage);
    } else {
      this.set(key, value);
    }
  }

  /**
   * Writes an Item into Storage
   * @param {*} key 
   * @param {*} value 
   */
  static set(key, value) {
    localStorage.setItem(key, JSON.stringify(value));
  }

  /**
   * Get from LocalStorage
   * @param {*} key 
   */
  static get(key) {
    return JSON.parse(localStorage.getItem(key));
  }

  /**
   * Searches an Item by ID in given Storage
   * @param {*} key 
   * @param {*} id 
   */
  static find(key, id) {
    let storage = this.get(key);
    if (Array.isArray(storage)) {
      for (let item of storage) {
        return (item.id === id) ? item : null;
      }
    }
  }
  /**
   * Finds an Entry in Storage and updates it with given updatedItem
   * @param {*} key 
   * @param {*} id 
   * @param {*} updatedItem 
   */
  static update(key, id, updatedItem) {
    let storage = this.get(key);

    for (let entry in storage) {
      if (storage[entry].id === id) {
        storage[entry] = updatedItem;
      }
    }
    this.set(key, storage);
  }

  static synced(value) {
    this.set('synced', value);
  }

  static isSynced() {
    return this.get('synced');
  }
}

export default Storage;

Hey Marten, me and my friend took part at your workshop on Saturday 03. November at SAE.
It would be awesome if you could upload the vue app you did in the workshop so we can have a look at the vue.js features again.
Thanks in advance. Theo