Number of options of an option field - Select

Issue

I am working with Angular 2 and I am having problems to get the number of options of a select.

I am able to get the total number of options that have a select:

<select class="form-control"(change)="carSelected(index = $event.target.selectedIndex);"
    required>
    <option></option>
    <option *ngFor="let oneCar of car.fourDoors">{{oneCar.name}}</option>
    <option *ngFor="let oneCar of car.twoDoors">{{oneCar.name}}</option>
</select>

using index = $event.target.selectedIndex and it perfectly works.

What i need but what i need is to check how many options of car.fourDoors are. Any idea?

Solution

To get the length of any array call its member length

car.fourDoors.length

Answered By - Iancovici