Having an issue with my countdown timer function:
startTimer(duration) {
this.myTimer = duration;
setInterval(function () {
this.myTimer--;
console.log("TIMER: " + typeof(this.myTimer) + " " + this.myTimer);
}, 1000);
}
When I call it using this.startTimer(60);,
The console.log output shows: TIMER: number NaN. It seems that typeof(this.myTimer) is returning number, but the value is NaN.
Any idea why it's returning NaN?
Just to clarify, I'm using Angular2 (typescript) and I've declared the variable myTimer within the component class before the constructor, as shown below:
export class myComponent {
myTimer;
constructor(private navCtrl: NavController) {}
// other code goes here
}