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Modus I: usus callback munus

• in app.js: Immutabile inglobalDataTunc munus callback exsequi potest.

• // app.js
  App({
    globalData: {
      someData: '',
    },
    setSomeData(newData, callback) {
      this.globalData.someData = newData;
      if (typeof callback === 'function') {
        callback();
      }
    },
  })
  

  in subpage: Vocatur ubi opus fueritappInstance.setSomeDatacallback munus transeant

• // pages/index/index.js
  Page({
    onLoad() {
      const appInstance = getApp();
      appInstance.setSomeData('new value', () => {
        this.setData({
          localData: appInstance.globalData.someData,
        });
      });
    },
  })
  

  Modus II: usus eventu bus

  Facere eventum bus (EventBus), inapp.jsFelis eventus in subpage et audi hunc eventum in subpagina.

• Event bus (bus.js)