Array vs string declaration in TypeScript

Question

I have a simple problem with my Ionic app.

So I have this code:

export class HomePage {
  devices: string[];
  stuff: string;
  constructor(public navCtrl: NavController) { };

  ionViewWillEnter() {
    this.devices.push('Roletor3000');
    this.stuff = 'test';
  }
}

And for some reason I get an error that this.devices does not exist. But this.stuff works just fine. What am I doing wrong here?

ChesterLaborde · Accepted Answer · 2018-01-25 17:29:20Z

2

You need to instantiate your array like so:

export class HomePage {
  devices: string[] = [];
  stuff: string;
  constructor(public navCtrl: NavController) { };

  ionViewWillEnter() {
    this.devices.push('Roletor3000');
    this.stuff = 'test';
  }
}

answered Jan 25, 2018 at 17:29

ChesterLaborde

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2 Comments

Alex Ironside Over a year ago

Wow thanks. Still lost with TypeScript a bit. Will select as best in 12 min

ChesterLaborde Over a year ago

Glad i could help!

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