title: JSON: Get the value of radio not with key on form submit
body: <p>I want to get the value only on form submit in angular. This is the Code</p>
  
  <p>In my Typescript:</p>
  
  <pre><code>constructor(public navCtrl: NavController, public navParams: NavParams, public modalCtrl: ModalController, public formBuilder: FormBuilder, public alertCtrl: AlertController,
  public loadingCtrl: LoadingController) {
  
  this.memleticsForm = formBuilder.group({
      changeType: [{}, Validators.required]
  });
  }
  
  
  memleticsSubmitForm(form) {
      console.log(form);
  
    }
  </code></pre>
  
  <p>Html:</p>
  
  <pre><code> &lt;form name="learningtestForm" [formGroup]="memleticsForm" (submit)="memleticsSubmitForm(memleticsForm.value)" novalidate&gt;
  &lt;table&gt;
    &lt;tr&gt;
      &lt;th&gt;Question&lt;/th&gt;
      &lt;th&gt;0&lt;/th&gt;
      &lt;th&gt;1&lt;/th&gt;
      &lt;th&gt;2&lt;/th&gt;
    &lt;/tr&gt;
  
    &lt;tr&gt;
     &lt;td&gt;You have a personal or private interest or hobby that you like to do alone.&lt;/td&gt;
     &lt;td&gt;
        &lt;input type="radio" formControlName="changeType" [value]=0&gt;
     &lt;/td&gt;
     &lt;td&gt;
        &lt;input type="radio" formControlName="changeType" [value]=1&gt;
     &lt;/td&gt;
     &lt;td&gt;
        &lt;input type="radio" formControlName="changeType" [value]=2&gt;
     &lt;/td&gt;
    &lt;/tr&gt;
  
  &lt;/table&gt;
  
  &lt;button ion-button block color="secondary" end type="submit"&gt;Submit&lt;/button&gt;
  </code></pre>
  
  <p></p>
  
  <p>When I clicked a button and submits it, the output on my console.log is "Object {changeType: 2}"</p>
  
  <p>But I want to get only the "2" and use it to compute a value like</p>
  
  <pre><code>memleticsSubmitForm(form) {
      var x = form * 5;
  console.log(x); // if 2 is clicked it should display 10
  }
  </code></pre>