Validation and formatting input parameters of Credit Cards

Demo

https://thekip.github.io/angular-cc-library/

Or run locally:

1. Clone repo
2. run yarn install
3. run yarn run:demo
4. visit http://localhost:4200

Usage

Installation

npm install angular-cc-library --save

Version Compatibility

| Angular | Library | |---------|---------| | 17.x | 3.3.x | | 16.x | 3.2.x | | 15.x | 3.1.x | | 14.x | 3.0.4 | | 13.x | 3.0.0 | | 12.x | 2.1.3 |

Formatting Directive

On the input fields, add the specific directive to format inputs. All fields must be type='tel' in order to support spacing and additional characters.

Since [email protected] all directives declared as standalone, so you can import them directly into your component:

import { Component } from '@angular/core';
import { CreditCardFormatDirective } from 'angular-cc-library';

@Component({
  selector: 'credit-card-number-input',
  standalone: true,
  deps: [CreditCardFormatDirective],
  template: `<input id="cc-number" type="tel" autocomplete="cc-number" ccNumber>`
})
export class CreditCardNumberInputComponent {}

But you can still import them all at once using CreditCardDirectivesModule:

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule } from '@angular/forms';
import { CreditCardDirectivesModule } from 'angular-cc-library';

import { AppComponent } from './app.component';

@NgModule({
    imports: [BrowserModule, FormsModule, CreditCardDirectivesModule],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule {
}

Credit Card Formatter

• add ccNumber directive:

<input id="cc-number" type="tel" autocomplete="cc-number" ccNumber>

• this will also apply a class name based off the card .visa, .amex, etc. See the array of card types in credit-card.ts for all available types

• You can get parsed card type by using export api:

<input type="tel" ccNumber #ccNumber="ccNumber">
<span class="scheme">{{ccNumber.resolvedScheme$ | async}}</span>

resolvedScheme$ will be populated with visa, amex, etc.

Expiration Date Formatter Will support format of MM/YY or MM/YYYY

• add ccExp directive:

<input id="cc-exp-date" type="tel" autocomplete="cc-exp" ccExp>

CVC Formater

• add ccCvc directive:

<input id="cc-cvc" type="tel" autocomplete="off" ccCVC>

Validation

Current only Model Validation is supported. To implement, import the validator library and apply the specific validator on each form control

import { CreditCardValidators } from 'angular-cc-library';

@Component({
  selector: 'app',
  template: `
    <form #demoForm="ngForm" (ngSubmit)="onSubmit(demoForm)" novalidate>
        <input id="cc-number" formControlName="creditCard" type="tel" autocomplete="cc-number" ccNumber>
        <input id="cc-exp-date" formControlName="expirationDate" type="tel" autocomplete="cc-exp" ccExp>
        <input id="cc-cvc" formControlName="cvc" type="tel" autocomplete="off" ccCvc>
    </form>
  `
})
export class AppComponent implements OnInit {
  form: FormGroup;
  submitted: boolean = false;

  constructor(private _fb: FormBuilder) {}

  ngOnInit() {
    this.form = this._fb.group({
      creditCard: ['', [CreditCardValidators.validateCCNumber]],
      expirationDate: ['', [CreditCardValidators.validateExpDate]],
      cvc: ['', [Validators.required, Validators.minLength(3), Validators.maxLength(4)]] 
    });
  }

  onSubmit(form) {
    this.submitted = true;
    console.log(form);
  }
}

Inspiration

Based on Stripe's jquery.payment plugin but adapted for use by Angular

License

MIT