Vue-currency-directive

Simple, quick custom directive for handling currency format inside text inputs.

Compatible with Vue 2.x

• Demo/Playground
• Installation
• Usage
• Global registration
• Local registration
• Dynamic arguments
• Examples

Installation

npm i vue-currency-directive || yarn add vue-currency-directive

Usage

• Register in your data() a main state object e.g. amount and inside it 2 main properties value and formatted.
  
• You mainly get 2 outputs: one for the unformatted/original value and the other for the formatted value.
• Valid values for currency USD, EUR, GBP, EGP, SAR, for more Currency Codes (ISO 4217 Standard).
• Valid values for locale en-US, de-DE, fr-FR, ar-EG, ar-SA, for more List of locales.

In DOM/Single-file-component

<input v-currency:<currency?>|[<minimumFractionDigits?>,<maximumFractionDigits?> ,<locale?>]="<bindingExpression>">

v-currency="amount.value"
v-currency:EUR="amount.value"
v-currency:EUR|[1,2,(en-GB)]="amount.value"

For example:

<template>
  <input v-currency="amount.value">
  <input v-currency="foo.value">
  <input v-currency="bar.value">
</template>

<script>
...
export default {
  data(){
    return {
      amount: { // naming is not strict 'amount, foo, bar, ...etc'
        value: '', 
        formatted: '' // Better to be empty
      }, 

      foo: {
        value: '',
        formatted: '' // Better to be empty
      },

      bar: {
        value: '',
        formatted: '' // Better to be empty
      }
    }
  }
}
...
</script>

With a Component/controlled input

const CurrencyInput = {
  template: '<input />',
}

// In DOM/Single-file-component
<CurrencyInput v-currency="amount.value">

Note: in case you are using a multiple or a group of different inputs with different types and you are not sure that the currency input is going to be indexed as the first item then you could pass a class name .v-currency-input other than that if it's going to be the only or the first input in the group then you don't have to.

Global registration

import Vue from 'vue';
import vueCurrencyDirective from 'vue-currency-directive';

Vue.directive('currency', vueCurrencyDirective);

Local registration

<script>
import vueCurrencyDirective from 'vue-currency-directive';
export default {
  ...
  data(){
    amount: {
      value: '', 
      formatted: '' // Better to be empty
    }, 
  },
  directives: {
    currency: vueCurrencyDirective
  },
  ...
}
</script>

Dynamic arguments

In case you want to handle arguments in more dynamic way based on data changes and not sticking with a specific currency and locale, just add 2 more state inputs currency and locale inside the parent object e.g. amount in our case and remove any directive args e.g.:EUR[de-DE] from the component and vice-versa:

<template>
  <input v-currency="amount.value" />

  //Currency selector
  <select v-model="amount.currency">
    <option value="USD">USD</option>
    <option value="EUR">EUR</option>
    <option value="GBP">GBP</option>
  </select>

  //Locale selector
  <select v-model="amount.locale">
    <option value="en-US">US</option>
    <option value="de-DE">DE</option>
    <option value="en-GB">GB</option>
  </select>
  
</template>

<script>
...
export default {
  data(){
    return {
      amount: { // naming is not strict 'amount, foo, bar, ...etc'
        value: '', 
        currency: '',
        locale: '',
        formatted: '' // Better to be empty
      }
    }
  }
}
...
</script>

Examples

Passing no arguments will reflect to USD currency by default and for locale it will use the configured browser language.

<input v-currency="amount.value"> // amount.value = 3244
//Output: $3,244.00

Passing currency argument only without locale.

<input v-currency:EUR="amount.value"> // amount.value = 100234
//Output: €100,234.00

Passing with locale argument and different currency.

<input v-currency:EGP[ar-EG]="amount.value"> // amount.value = 554342
//Output: ٥٥٤٬٣٤٢٫٠٠ ج.م.‏