Save data from a .ts file (in app)

Ionic Framework ionic-v3
9

Hi rapropos, thanks for this explanation and sorry I did not answer earlier.

I made changes in the app, following your advices from this thread.
But regarding Storage, I do not understand how to use it to store the variable “i” and the cards that have been shuffled. How can I do it based on the file below ? Have you a few example I can follow to achieve that ? thanks

home.ts

import { Component, } from '@angular/core';
import { NavController } from 'ionic-angular';
import { Storage } from '@ionic/storage';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {
  cards:any = [];
  i: number;

  constructor(public navCtrl: NavController, private storage: Storage,) {
    this.i = 0;
  }

  ngOnInit() {
    this.cards = [
        {id: '1', question: 'lkndlkc', answer: 'kdckdlqkn.', hint: 'oidncoisdnc.'},
        {id: '2', question: 'bla', answer: 'xnqspin', hint: 'xnsin'}, 
        {id: '3', question: 'csnd', answer: 'xnqcksjd cjspin', hint: 'xnsij dljn'}, 
        {id: '4', question: 'bqlksncla', answer: 'xnqscljqs cpin', hint: 'xnscqns ljin'}, 
        {id: '5', question: 'blalqjsx', answer: 'xnlqjsnxqspin', hint: 'xnsqlksnxin'}, 
        {id: '6', question: 'blq lksnxqsna', answer: 'knk', hint: 'xklnknsin'}, 
    ];
    console.log(this.cards);
 
}
  setI() {
    this.i++;
    console.log(this.i)
  }

 shuffleCards(cards) {
    var currentIndex = cards.length, temporaryValue, randomIndex;
    while (0 !== currentIndex) {
      randomIndex = Math.floor(Math.random() * currentIndex);
      currentIndex -= 1;

      temporaryValue = cards[currentIndex];
      cards[currentIndex] = cards[randomIndex];
      cards[randomIndex] = temporaryValue;
    };
    console.log(this.cards);
    console.log(this.cards[1]);
  }
}