Typescript 3 Angular 7 StopPropagation and PreventDefault not working

You have two different events, one is mousedown and another is click.

The e.stopPropagation() only works if both of the events are of the same kind.

You can change the input like this to work as expected:

<input #inputBox matInput (click)="fireEvent($event)" max-width="12" />

Live example: https://stackblitz.com/edit/angular-material-basic-stack-55598740?file=app/input-overview-example.ts

You can only stop propagation for the same event.

Your fireEvent function stops propagation for your mousedown event, but not for your click event.

If you want to stop propagation to click, try to add another click event on the input and stop propagation from there

For instance

<input #inputBox matInput (click)="$event.stopPropagation()" max-width="12" />

Your other function only needs to know what is required, that is, set focus

fireEvent(e) {
    this.inputBox.nativeElement.focus();
    console.log('click inside input');
}

preventDefault() prevents the default behaviour, it is not related to bubbling or not the events, so you can safely ignore it

Try with (click)="$event.stopPropagation()". It might help as it worked for me in my scenario.

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