FOCUS and BLUR event not working?

Phaser 3
1

Hi, is there an example on how to use these events?

I tried adding it in scene like

this.events.addListener(Phaser.Core.Events.FOCUS, this._onFocus, this);
this.events.addListener(Phaser.Core.Events.BLUR, this._onBlur, this);

changing tabs on my chrome browser, does not trigger that function at all

am I adding that wrong?

2

Use this.game.events.

3

Thanks that works great.