The ResultEditComponent can also be upgraded just like the previous ones; yet, it features another slightly different logic--the MinValue and MaxValue properties, both of them having a nullable number type. The scenario is similar to the AnswerEditComponent Value property, which we faced in the previous paragraph, except that we now have two <input type="number"> instead of a single <select>.
Luckily enough, it doesn't change how we can handle it in the component template file:
[...]<div class="form-group" [ngClass]="{ 'has-error has-feedback' : hasError('MinValue') }"> <label for="MinValue">Minimum Score Value:</label> <br /> <input type="number" id="MinValue" name="MinValue" formControlName="MinValue" class="form-control" ...
