Select multiple inputs and store into an array in angular 5 - arrays

Question

I am using angular 5 and I want to select multiple inputs from the dropdown and store the selected input into an array.
<select multiple class="form-control " name="fea" ngModel size="3" >
<option *ngFor="let feature of features | async" [ngValue]="feature">
{{ feature.name }}
</option>
</select>
Here I am selecting multiple inputs correctly but how can I store selected values in an array?
Any help will be appreciated!

Answer 1

You can change option tag to below.
<option *ngFor="let feature of features | async" [ngValue]="feature" (click)="AddtoArray(feature.name)">
{{ feature.name }}
</option>
In you component,
array:any[]=[];
AddtoArray(feature:any){
this.array.push(feature);
}

Answer 2

You can simply use ngModel to add your selections to your model / array.
Kindly use something like below:-
<select multiple class="form-control " name="fea" ngModel size="3" [(ngModel)]="selectedFeatures">
<option *ngFor="let feature of features" [ngValue]="feature">
{{ feature.name }}
</option>
</select>
For a working solution, have a look at the below stackblitz:-
https://stackblitz.com/edit/angular-hyazbe?file=src%2Fapp%2Fapp.component.html
Don't forget to press shift key to make multiple selections.
PS: I have not used the async pipe in the code but it should work fine with it too.

Answer 3

This can easily be achieved using (change) event as follows:
<select multiple class="form-control " name="fea" [(ngModel)]="model" (change)="valueAdded(model)">
<option *ngFor="let feature of features | async" [ngValue]="feature">
{{ feature.name }}
</option>
</select>
And in .ts file
var **yourArray**:string[]; // define array
valueAdded(val){
**yourArray**.Push(val);
}
This will add the selected options from dropDown in array named as **yourArray**