I want to clear my textbox and dropdown list and radio button.
code that i used
html code
<ion-header>
<ion-navbar>
<ion-title>Postpaid</ion-title>
</ion-navbar>
</ion-header>
<ion-content padding>
<form (submit)="doSubmit($event)" [ngFormModel]="prepaidForm">
<ion-list>
<ion-item>
<ion-label>Operator</ion-label>
<ion-select #item ngControl="operator">
<ion-option *ngFor="let item of oprArray" value="{{item.oprCode}}">{{item.oprName}}</ion-option>
</ion-select>
</ion-item>
</ion-list>
<ion-list >
<!-- <ion-list-header>
gdfgd
</ion-list-header> -->
<ion-item>
<ion-label floating>Mobile No</ion-label>
<ion-input type="number" ngControl="mobileNo"></ion-input>
</ion-item>
<ion-item>
<ion-label floating>Amount</ion-label>
<ion-input type="number" ngControl="amount"></ion-input>
</ion-item>
</ion-list>
<button secondary round block>Submit</button>
</form>
</ion-content>
ts file code
this.postpaidForm = new ControlGroup({"operator": this.oprControl,"mobileNo":this.mobControl,"amount":this.amountControl });
this.postpaidForm.control["mobileNo"].reset();
this.postpaidForm.control["amount"].updateValue("");
but above code not work