使用模式 Angular 2 进行输入验证

I'm currently writing a simple form in ionic 2 (Angular 2). I was wondering how I'd add a simple regular expression pattern to the validation:

我基本上有这个:

<form>
    <ion-input stacked-label>
        <ion-label>{{label.msisdn}}</ion-label>
        <input type="text"
               [(ngModel)]="msisdn"
               ngControl="msisdnForm"
               required
               maxlength="10"
               minlength="10"
               pattern="06([0-9]{8})"
               #msisdnForm="ngForm"
        >
    </ion-input>
    <button [disabled]="!msisdnForm.valid" block (click)="requestActivationCode()">
        {{label.requestActivationCode}}
    </button>
</form>

最大长度、最小长度和required 正在被拾取(如果不满足条件，按钮将被禁用).现在我想将输入限制为数字并在其前面加上 06(数字最少的荷兰电话号码).

var pattern=/06([0-9]{8})/;

 <input type="text"
               [(ngModel)]="msisdn"
               ngControl="msisdnForm"
               required
               maxlength="10"
               minlength="10"
               [pattern]="pattern"
               #msisdnForm="ngForm"
        >