Money Mask for Vue 3

View Demo

Introduction

Welcome to v-money3, a versatile money masking solution designed specifically for Vue 3 applications. This library serves as a replacement for the now-abandoned v-money library, ensuring compatibility and functionality for projects transitioning to Vue 3.

Features

• Arbitrary Precision: Utilize BigInt for precise calculations.
• Lightweight: Less than 4KB when gzipped.
• Dependency-free: No external dependencies for seamless integration.
• Mobile Support: Ensures a consistent experience across devices.
• Component or Directive Flavors: Choose between component-based or directive-based implementation.
• Copy/Paste Support: Easily accept input via copy/paste actions.
• Min/Max Limits: Set minimum and maximum limits for input values.

Arbitrary Precision

In this release, some breaking changes have been introduced. Let's delve into the details:

v-money3 supports arbitrary precision through the use of BigInt. Arbitrary precision is only supported with v-model. When using v-model, ensure the input is provided as a string representation of a number (e.g., '12345.67'). If your precision is set to 2 and you provide a default v-model value of '55', it will be interpreted as '0.55'. To maintain the correct format, ensure you pass '55.00' when using v-model.

For most users, it's advisable to utilize floating-point numbers and adhere to the boundaries of Number. In such cases, employing v-model with the number modifier, or v-model.number, is recommended. However, this limits you to numbers smaller than 2^53 - 1 or 9007199254740991 (approximately nine quadrillion). Refer to MAX_SAFE_INTEGER for more information. For users employing v-model.number, integers and floats are intuitively understood. If your precision is set to 2 and you input a default v-model.number value of 55, it will be interpreted as 55.00. The same applies to 5.5, which will be rendered as 5.50.

More Examples

Browser Target

If you encounter the error message: Big integer literals are not available in the configured target environment, please ensure your browser targets are updated to include at least the following entries:

['es2020', 'safari14']

Can I use bigInt? https://caniuse.com/bigint

More information: #66, #70, #89

Installation

npm i v-money3 --save

Usage

Register Globally (view codesandbox)

import { createApp } from "vue";
import money from 'v-money3'

const app = createApp({/* options */})

// register directive v-money3 and component <money3>
app.use(money)

Only Global Component (view codesandbox)

import { createApp } from "vue";
import { Money3Component } from 'v-money3'

const app = createApp({/* options */})

// register component <money3>
app.component("money3", Money3Component)

Only Global Directive (view codesandbox)

import { createApp } from "vue";
import { Money3Directive } from 'v-money3'

const app = createApp({/* options */})

// register directive v-money3
app.directive('money3', Money3Directive)

Use as component (view codesandbox)

<template>
  <money3 v-model="amount" v-bind="config"></money3> {{ amount }}
</template>

<script>
  import { Money3Component } from 'v-money3'

  export default {
    components: { money3: Money3Component },
    data () {
      return {
        amount: '12345.67',
        config: {
          masked: false,
          prefix: '',
          suffix: '',
          thousands: ',',
          decimal: '.',
          precision: 2,
          disableNegative: false,
          disabled: false,
          min: null,
          max: null,
          allowBlank: false,
          minimumNumberOfCharacters: 0,
          shouldRound: true,
          focusOnRight: false,
        }
      }
    }
  }
</script>

Component v-model number modifier (view codesandbox)

When using v-model, the returned value will always be a string. If the masked property is set to true, it will be formatted accordingly; otherwise, it will be a fixed string representation of a floating-point number. If you require your model to be a floating-point number, utilize the number modifier. For example:

• v-model="amount" will return a fixed string with a typeof string. For instance: '123456.78'
• v-model.number="amount" will return a floating-point number with a typeof number. For example: 123456.78

<template>
  <money3 v-model.number="amount" v-bind="config"></money3>
</template>

<script>
  import { Money3Component } from 'v-money3'

  export default {
    components: { money3: Money3Component },
    data () {
      return {
        amount: 12345.67,
        config: { ... }
      }
    }
  }
</script>

Use as directive (view codesandbox)

To ensure proper functionality, you must use v-model.lazy for binding.

<template>
  <input v-model.lazy="amount" v-money3="config" />
</template>

<script>
  import { Money3Directive } from 'v-money3'

  export default {
    data () {
      return {
        amount: '12345.67',
        config: {
          prefix: '',
          suffix: '',
          thousands: ',',
          decimal: '.',
          precision: 2,
          disableNegative: false,
          disabled: false,
          min: null,
          max: null,
          allowBlank: false,
          minimumNumberOfCharacters: 0,
          shouldRound: true,
          focusOnRight: false,
        }
      }
    },
    directives: { money3: Money3Directive }
  }
</script>

By default, directives are only compatible with v-model. It's important to note that using v-model.number directly on directives is not supported. If you need to work with float or integer on directives, you'll need to manually configure the number modifier.

Using config:

modelModifiers: {
  number: true,
}

If you directly bind it, you're perfectly fine as well:

<input :model-modifiers="{ number: true }" v-model.lazy="amount" v-money3="config" />

Properties

property	Required	Type	Default	Description
precision	true	Number	2	How many decimal places
decimal	false	String	"."	Decimal separator
thousands	false	String	","	Thousands separator
prefix	false	String	""	Currency symbol followed by a Space, like "R$ "
suffix	false	String	""	Percentage for example: " %"
masked	false	Boolean	false	If the component output should include the mask or not
disable-negative	false	Boolean	false	Component does not allow negative values
disabled	false	Boolean	false	Disable the inner input tag
min	false	Number	null	The min value allowed
max	false	Number	null	The max value allowed
allow-blank	false	Boolean	false	If the field can start blank and be cleared out by user
minimum-number-of-characters	false	Number	0	The minimum number of characters that the mask should show
should-round	false	Boolean	true	Should default values be rounded or sliced
focus-on-right	false	Boolean	false	When focus, set the cursor to the far right

Restricted Characters

Numbers 0-9 and the following characters...

• +
• -

...are restricted on following properties:

• decimal
• thousands
• prefix
• suffix

Restricted inputs will be filtered out of the final mask, and a console warning with more information will be displayed.

Don't want to use a package manager?

Use it directly in the browser!

<script src="https://unpkg.com/v-money3@3.24.1/dist/v-money3.umd.js"></script>

Take a look at issue #15 and also this codesandbox working example.

Use the internal mask functions

import { format, unformat } from 'v-money3';

const config = {
    debug: false,
    masked: false,
    prefix: '',
    suffix: '',
    thousands: ',',
    decimal: '.',
    precision: 2,
    disableNegative: false,
    disabled: false,
    min: null,
    max: null,
    allowBlank: false,
    minimumNumberOfCharacters: 0,
    modelModifiers: {
        number: false,
    },
    shouldRound: true,
    focusOnRight: false,
}

const formatted = format(12345.67, config);
console.log(formatted);
// output string: 'R$ 12.345,67 #'

const unformatted = unformat(formatted, config);
console.log(unformatted);
// output fixed string: '12345.67'

/* ----------------- or ----------------- */

config.modelModifiers = { number: true };

const unformatted = unformat(formatted, config);
console.log(unformatted);
// output float number: 12345.67

Contribution and Feedback

Your contributions and feedback are highly valued! If you encounter any issues or have suggestions for improvement, please feel free to open an issue or submit a pull request on GitHub.

The previous v-money library has been abandoned, prompting the development of v-money3 to accommodate projects migrating to Vue 3.

Happy coding with v-money3!

References

• https://github.com/vuejs-tips/v-money (based on v-money)