Make Mask

make-mask is a lightweight javascript library of approximately 1kb for working with text masks. It was built to solve problems mainly in HTML inputs with javascript free from any other library. It was designed to solve inputs, but it is also valid when used to print texts in a simple and objective way. I guarantee a secure library covered with tests and open source!

It is very simple to use to create masks using the patterns below:

0 — Digits
Only numbers

9 — Optional digits
Indicates whether there will be a number or not

# — Recursive digits
Use this pattern to create infinitely repeatable formulas

A — Letters and numbers
Uppercase, lowercase letters and numbers

S — Letters
Uppercase, lowercase letters

Installing

Using npm:

npm install make-mask

Using yarn:

yarn add make-mask

Using jsDelivr CDN:

<script src="https://cdn.jsdelivr.net/npm/make-mask/dist/make.min.js"></script>

Using unpkg CDN:

<script src="https://unpkg.com/make-mask/dist/make.min.js"></script>

Usage

• Vanilla JS → Preview
• React → Preview

Default function arguments

It's very simple to use!

import mask from 'make-mask'

mask('12345678', '00000-000') // => 12345-678

Type information about the function

/**
 * Returns the transformed value
 * @param   {string} value    original value
 * @param   {string} mask     syntax pattern
 * @param   {object} options  options object
 * @return  {string}          mask result
*/
fn(value, mask[ , options])

Most common examples

Date

mask('27101', '00/00/0000')     // => 27/10/1
mask('271018', '00/00/0000')    // => 27/10/18
mask('2710182', '00/00/0000')   // => 27/10/182
mask('27101820', '00/00/0000')  // => 27/10/1820

Hour

mask('203', '00:00:00')     // => 20:3
mask('2039', '00:00:00')    // => 20:39
mask('20392', '00:00:00')   // => 20:39:2
mask('203922', '00:00:00')  // => 20:39:22

ZIP Code

mask('01310', '00000-000')    // => 01310
mask('013109', '00000-000')   // => 01310-9
mask('0131093', '00000-000')  // => 01310-93
mask('01310930', '00000-000') // => 01310-930

Money

const options = { reverse: true }
mask('6689', '#.##0,00', options)     // => 66,89
mask('66899', '#.##0,00', options)    // => 668,99
mask('668993', '#.##0,00', options)   // => 6.689,93
mask('6689932', '#.##0,00', options)  // => 66.899,32

Telephone with DDD

const m = '(00) 0000-0000'
mask('11994132', m)     // => (11) 9413-2
mask('119941325', m)    // => (11) 9413-25
mask('1199413256', m)   // => (11) 9413-256
mask('11994132568', m)  // => (11) 9413-2568

CPF

const options = { reverse: true }
const m = '000.000.000-00'
mask('6698', m, options)    // => 66-98
mask('66980', m, options)   // => 669-80
mask('669809', m, options)  // => 6.698-09
mask('6698090', m, options) // => 66.980-90

CNPJ

const options = { reverse: true }
const m = '00.000.000/0000-00'
mask('0000', m, options)    // => 00-00
mask('00001', m, options)   // => 000-01
mask('000016', m, options)  // => 0000-16
mask('0000168', m, options) // => 0/0001-68

IP Address

const m = '099.099.099.099'
mask('255255', m)       // => 255.255
mask('25525525', m)     // => 255.255.25
mask('2552552552', m)   // => 255.255.255.2
mask('255255255255', m) // => 255.255.255.255

We recommended for you

Maybe when working with price values directly in inputs, this library is not suitable for your needs. And we recommend exploring the make-currency library!

License

MIT