Reserve a spot for a credit card in 4-digit format with VueJS

Question

Reserve a spot for a credit card in 4-digit format with VueJS

When I enter a credit card number, I want to automatically insert a space after every 4 digits. For example: 0000 0000 0000 0000 I am currently using vue js and have come across examples using jquery, but I prefer not to use jquery.

Any help would be appreciated

<!--template -->
<div>
  <div>
    <p>Card Number</p>
    <input class="cardNumber" type="tel" name="cardNumber" placeholder="Enter your card number " maxlength="19" pattern="\d*"><i class="fas fa-credit-card"></i>
  </div>
  <div>
    <p>Expiration Date</p>
    <input type="tel" name="expiration" pattern="\d*" maxlength="7" placeholder="MM / YY">
  </div>
  <div>
    <p>CVV</p>
    <input type="tel" name="cvv" pattern="\d*" maxlength="4" placeholder="CVV">
  </div>
</div>
<!-- /template -->

javascript vue.js vuejs3

Answer 1

Answer №1

Vue2 has a feature called filters specifically designed for this purpose.

const app = new Vue({
  el: '#app',
  data(){
    return {
      cardNumber: '' 
    } 
  },
  filters: {
    formatCardNumber(value){
      return value ? value.match(/.{1,4}/g).join(' ') : '';
    } 
  },
  methods: {
    updateValue(e){
       this.cardNumber = e.target.value.replace(/ /g,'');
    }
  }
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<main id="app">
  <input :value="cardNumber | formatCardNumber" @input="updateValue"/>
</main>

In Vue3, the use of computed is recommended as a replacement for filters. Filters have been removed from Vue 3.0 and are no longer supported.

Vue.createApp({
      data(){
        return {
          cardNumber: '' 
        } 
      },
      computed: {
        formatCardNumber(){
          return this.cardNumber ? this.cardNumber.match(/.{1,4}/g).join(' ') : '';
        } 
      },
      methods: {
        updateValue(e){
           this.cardNumber = e.target.value.replace(/ /g,'');
        }
      }
    }).mount('#app')

<script src="https://unpkg.com/vue@next"></script>
<main id="app">
  <input :value="formatCardNumber" @input="updateValue"/>
</main>

Answer 2

Vue2 has a feature called filters specifically designed for this purpose.

const app = new Vue({
  el: '#app',
  data(){
    return {
      cardNumber: '' 
    } 
  },
  filters: {
    formatCardNumber(value){
      return value ? value.match(/.{1,4}/g).join(' ') : '';
    } 
  },
  methods: {
    updateValue(e){
       this.cardNumber = e.target.value.replace(/ /g,'');
    }
  }
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<main id="app">
  <input :value="cardNumber | formatCardNumber" @input="updateValue"/>
</main>

In Vue3, the use of computed is recommended as a replacement for filters. Filters have been removed from Vue 3.0 and are no longer supported.

Vue.createApp({
      data(){
        return {
          cardNumber: '' 
        } 
      },
      computed: {
        formatCardNumber(){
          return this.cardNumber ? this.cardNumber.match(/.{1,4}/g).join(' ') : '';
        } 
      },
      methods: {
        updateValue(e){
           this.cardNumber = e.target.value.replace(/ /g,'');
        }
      }
    }).mount('#app')

<script src="https://unpkg.com/vue@next"></script>
<main id="app">
  <input :value="formatCardNumber" @input="updateValue"/>
</main>

Answer 3

Answer №2

In my opinion, the most convenient way to apply a pattern to input in Vuejs is by utilizing the vue-the-mask library.

For instance, here's how you can use this approach for a bank account pattern:

...

<div>
 <label>Bank Account</label>
 <the-mask
  v-model="bankAccount"
  :mask="['###-#', '####-#', '#####-#', '######-#']"
 />
</div>

...

Answer 4

In my opinion, the most convenient way to apply a pattern to input in Vuejs is by utilizing the vue-the-mask library.

For instance, here's how you can use this approach for a bank account pattern:

...

<div>
 <label>Bank Account</label>
 <the-mask
  v-model="bankAccount"
  :mask="['###-#', '####-#', '#####-#', '######-#']"
 />
</div>

...

Answer 5

Answer №3

Your card input seems to be linked to a data object:

data() {
  return {
    cardNumber: ''
  }
}

Within the template using v-model, you can include an event listener for keyup:

<input v-model="cardNumber" @keyup="formatCardNumber" class="creditCardNumber" type="tel" name="creditCardNumber" placeholder="Enter your credit card number " maxlength="19" pattern="\d*"><i class="fas fa-credit-card"></i>

Create a method like this:

methods: {
  formatCardNumber() {
    let num = this.cardNumber;
    (num.length - (num.split(" ").length - 1)) % 4 === 0 ? this.cardNumber += ' ' : '';
  }
}

In this method, with each keyup event, it checks if the length of the text entered in the credit card input (excluding spaces) is divisible by 4.

Answer 6

Your card input seems to be linked to a data object:

data() {
  return {
    cardNumber: ''
  }
}

Within the template using v-model, you can include an event listener for keyup:

<input v-model="cardNumber" @keyup="formatCardNumber" class="creditCardNumber" type="tel" name="creditCardNumber" placeholder="Enter your credit card number " maxlength="19" pattern="\d*"><i class="fas fa-credit-card"></i>

Create a method like this:

methods: {
  formatCardNumber() {
    let num = this.cardNumber;
    (num.length - (num.split(" ").length - 1)) % 4 === 0 ? this.cardNumber += ' ' : '';
  }
}

In this method, with each keyup event, it checks if the length of the text entered in the credit card input (excluding spaces) is divisible by 4.

Answer 7

Answer №4

 const application = new Vue({
       el: '#application',
         data(){
          return {
           cardNumber: '' 
           } 
          },
        filters: {
           formatCard(value){
               return value ? (value.replace(/ /g, '')).match(/.{1,4}/g).join(' ') : '';
           } 
         },
         methods: {
          isNumeric(evt) {
            evt = (evt) ? evt : window.event;
            var charCode = (evt.which) ? evt.which : evt.keyCode;
            if ((charCode > 31 && (charCode < 48 || charCode > 57)) && charCode !== 46) {
                evt.preventDefault();
            } else {
                return true;
            }
        },
            updateInput(e){
               if (e.target.value.trim() != "") {
                   this.cardNumber = (e.target.value.replace(/ /g, '')).match(/.{1,4}/g).join(' ')
                } else {
                   this.cardNumber = ""
                }
            }
         }
         })

#application {
display: flex;
    flex-direction: column;
}
#application label{ 
height: 20px;
        font-size:15px;
        color:green;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"> 
</script>
<main id="application">
<label>{{cardNumber}}</label>
         <input placeholder="Enter Card Number" :value="cardNumber | formatCard" @input="updateInput" @keypress="isNumeric($event)"/>
      </main>

Answer 8

 const application = new Vue({
       el: '#application',
         data(){
          return {
           cardNumber: '' 
           } 
          },
        filters: {
           formatCard(value){
               return value ? (value.replace(/ /g, '')).match(/.{1,4}/g).join(' ') : '';
           } 
         },
         methods: {
          isNumeric(evt) {
            evt = (evt) ? evt : window.event;
            var charCode = (evt.which) ? evt.which : evt.keyCode;
            if ((charCode > 31 && (charCode < 48 || charCode > 57)) && charCode !== 46) {
                evt.preventDefault();
            } else {
                return true;
            }
        },
            updateInput(e){
               if (e.target.value.trim() != "") {
                   this.cardNumber = (e.target.value.replace(/ /g, '')).match(/.{1,4}/g).join(' ')
                } else {
                   this.cardNumber = ""
                }
            }
         }
         })

#application {
display: flex;
    flex-direction: column;
}
#application label{ 
height: 20px;
        font-size:15px;
        color:green;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"> 
</script>
<main id="application">
<label>{{cardNumber}}</label>
         <input placeholder="Enter Card Number" :value="cardNumber | formatCard" @input="updateInput" @keypress="isNumeric($event)"/>
      </main>

Reserve a spot for a credit card in 4-digit format with VueJS

Answer №1

Answer №2

Answer №3

Answer №4

Similar questions

Interactive Dropdown Menus for 3 Separate Database Tables

Senecajs responded with a result that was neither an object nor an array, displaying a Promise

How can I extract the domain name using a regular expression in JavaScript?

Retrieve the jquery.data() of an element stored in an HTML file using JavaScript or jQuery

Using JQuery to find the nearest element and narrowing down the search to its child elements

Is it possible to extract the value displayed on a Typography component in Material UI and store it in a state variable?

Tips for adjusting the font weight and size of the label within a Quasar Tab

What is the best way to invoke an HTML file using a jQuery function in a JavaScript file?

Searching for the precise draggable grid line position in rulerguides.js - tips and tricks!

Exploring the directories: bundles, lib, lib-esm, and iife

Retrieve the page dimensions from a Material UI component `<DataGrid autoPageSize/>`

Strategies for sending data to child components in Vue

Should the utilization of vue-cli and vue-cli-service be considered an unsound practice?

React-Query: executing a function after updating query data

What's the best approach: Backbone-Relational discovery or retrieval?

Send the contents of a `<ul>` element to the server using AJAX for form submission

Ways to access the files attribute in an input tag in AngularJS without relying on getElementById

Choose a HTML element <a> containing a hyperlink reference and a nested child element <li>

Loading state with suggestions from autocomplete feature on React

Populate a dropdown list with array elements using Javascript in ReactJS