Setting input limits in AlertBox in Ionic v3: A step-by-step guide

Question

Setting input limits in AlertBox in Ionic v3: A step-by-step guide

I am currently working on creating an alert box that includes some inputs. I am trying to restrict the input to a maximum of 10 characters and ensure that only numbers are allowed.

Unfortunately, I haven't been able to find any helpful guides on this topic. Any assistance would be greatly appreciated.

>  const alert = this.alertCtrl.create({
                                            title: 'Please Enter your Mobile',
                                            inputs: [
                                            {
                                                name: 'mobile',
                                                placeholder: 'Mobile'
                                            }

                                            ],
                                            buttons: [
                                            {
                                                text: 'Done',
                                                handler: data => {
                                                            if (data.mobile != "" || data.mobile != null) {
                                                                    this.data3 = data.mobile;
                                                                    this.storage.set('number', data.mobile);

                                                            } 
                                                            else {
                                                                    this.ionViewDidLoad();
                                                            }
                                                }
                                            }
                                            ]
                                });
                                alert.present();

Here is the code I have so far. My goal is to constrain the mobile input field to 10 characters, allow only numerical values, and verify if it is empty or not.

angular typescript ionic-framework ionic3

Answer 1

Answer №1

If you want to display notifications, consider using the Toast feature available here.

For handling alerts, refer to the done handler in the alert box:

{
          text: 'Done',
          handler: (data) => {
            if (MyValidator.isValid(data.mobile)) {
              if (this.data) {
                //my code
              } else {
                //my code
              }
              return true;
            } else {
              this.showErrorToast('Invalid mobile');
              return false;
            }
          }
        }

Note: Utilize the MyValidator class for validation purposes as needed.

The syntax for the Toast method is as follows:

showErrorToast(data: any) {
    let toast = this.toastCtrl.create({
      message: data,
      duration: 3000,
      position: 'top'
    });

    toast.onDidDismiss(() => {
      console.log('Dismissed toast');
    });

    toast.present();
  }

For further information, check out this link.

Answer 2

If you want to display notifications, consider using the Toast feature available here.

For handling alerts, refer to the done handler in the alert box:

{
          text: 'Done',
          handler: (data) => {
            if (MyValidator.isValid(data.mobile)) {
              if (this.data) {
                //my code
              } else {
                //my code
              }
              return true;
            } else {
              this.showErrorToast('Invalid mobile');
              return false;
            }
          }
        }

Note: Utilize the MyValidator class for validation purposes as needed.

The syntax for the Toast method is as follows:

showErrorToast(data: any) {
    let toast = this.toastCtrl.create({
      message: data,
      duration: 3000,
      position: 'top'
    });

    toast.onDidDismiss(() => {
      console.log('Dismissed toast');
    });

    toast.present();
  }

For further information, check out this link.

Setting input limits in AlertBox in Ionic v3: A step-by-step guide

Answer №1

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