ngx-mask

What is ngx-mask?

ngx-mask is an Angular library that provides input masking capabilities. It allows developers to define patterns for input fields, ensuring that users enter data in a specific format. This is particularly useful for fields like phone numbers, dates, and credit card numbers.

What are ngx-mask's main functionalities?

Basic Input Masking

This feature allows you to apply a basic mask to an input field. In this example, the input field will only accept numbers in the format of '0000-0000-0000-0000', which is useful for credit card numbers.

<input type='text' mask='0000-0000-0000-0000' />

Date Masking

This feature allows you to apply a date mask to an input field. The input field will only accept dates in the format of 'DD/MM/YYYY'.

<input type='text' mask='00/00/0000' />

Custom Masking

This feature allows you to create custom masks. In this example, the input field will accept a pattern like 'A0A 0A0', which is useful for postal codes.

<input type='text' mask='A0A 0A0' />

Dynamic Masking

This feature allows you to apply a mask dynamically based on a variable. The 'dynamicMask' variable can be changed at runtime to apply different masks.

<input type='text' [mask]='dynamicMask' />

Other packages similar to ngx-mask

text-mask

text-mask is a library that provides input masking for various frameworks including Angular, React, and Vue. It offers similar functionality to ngx-mask but is more versatile as it supports multiple frameworks.

cleave.js

cleave.js is a JavaScript library for formatting input fields. It supports a wide range of input types including credit card numbers, phone numbers, and dates. Compared to ngx-mask, cleave.js offers more built-in formats and is framework-agnostic.

imask

imask is a versatile input masking library that supports a wide range of input types and custom masks. It is similar to ngx-mask but offers more advanced features like dynamic mask changing and custom mask definitions.

README

NGX MASK

NGX MASK is the best directive to solve masking input with needed pattern

You can also try our NGX LOADER INDICATOR check. You can also try our NGX COPYPASTE check.

You can try live documentation with examples

Installing

$ npm install --save ngx-mask

Quickstart if ngx-mask version >= 15.0.0

Import ngx-mask directive, pipe and provide NgxMask providers with provideNgxMask function.

With default config options application level

bootstrapApplication(AppComponent, {
    providers: [
        (...)
        provideEnvironmentNgxMask(),
        (...)
    ],
}).catch((err) => console.error(err));

Passing your own mask config options

import { IConfig } from 'ngx-mask'

const maskConfig: Partial<IConfig> = {
  validation: false,
};

bootstrapApplication(AppComponent, {
    providers: [
        (...)
        provideEnvironmentNgxMask(maskConfig),
        (...)
    ],
}).catch((err) => console.error(err));

Using a function to configure:

const maskConfigFunction: () => Partial<IConfig> = () => {
  return {
    validation: false,
  };
};

bootstrapApplication(AppComponent, {
    providers: [
         (...)
         provideEnvironmentNgxMask(maskConfigFunction),
         (...)
],
}).catch((err) => console.error(err));

With config options feature level

@Component({
    selector: 'my-feature',
    templateUrl: './my-feature.component.html',
    styleUrls: ['./my-feature.component.css'],
    standalone: true,
    imports: [NgxMaskDirective, (...)],
    providers: [
          (...)
          provideNgxMask(),
          (...)
    ],
})
export class MyFeatureComponent {}

Then, import directive, pipe to needed standalone component and just define masks in inputs.

With Angular modules

@NgModule({
  imports: [
      NgxMaskDirective, NgxMaskPipe
  ],
  providers: [provideNgxMask()]
})

Quickstart if ngx-mask version < 15.0.0

For version ngx-mask < 15.0.0 Import ngx-mask module in Angular app.

With default mask config options

import { NgxMaskModule, IConfig } from 'ngx-mask'

export const options: Partial<null|IConfig> | (() => Partial<IConfig>) = null;

@NgModule({
  imports: [
    NgxMaskModule.forRoot(),
  ],
})

Passing in your own mask config options

import { NgxMaskModule, IConfig } from 'ngx-mask'

const maskConfig: Partial<IConfig> = {
  validation: false,
};

@NgModule({
  imports: [
    NgxMaskModule.forRoot(maskConfig),
  ],
})

Or using a function to get the config:

const maskConfigFunction: () => Partial<IConfig> = () => {
  return {
    validation: false,
  };
};

@NgModule({
  imports: [
    NgxMaskModule.forRoot(maskConfigFunction),
  ],
})

Then, just define masks in inputs.

Usage

<input type="text" mask="<here goes your mask>" />

or

<input type="text" [mask]="<here goes a reference to your component's mask property>" />

Also, you can use mask pipe.

<span>{{phone | mask: '[phone]'}}</span>

You could path any valid config options, for example thousandSeparator and suffix

<span>{{value | mask: 'separator': {thousandSeparator: ',', suffix: ' sm'}}</span>

Examples

mask	example
9999-99-99	2017-04-15
0*.00	2017.22
000.000.000-99	048.457.987-98
AAAA	0F6g
SSSS	asDF
UUUU	ASDF
LLLL	asdf

Mask Options

You can define your custom options for all directives (as object in the mask module) or for each (as attributes for directive). If you override this parameter, you have to provide all the special characters (default one are not included).

specialCharacters (string[ ])

We have next default characters:

character
-
/
(
)
.
:
space
+
,
@
[
]
"
'

Usage

<input type="text" [specialCharacters]="[ '[' ,']' , '\\' ]" mask="[00]\[000]" />

Then

Input value: 789-874.98
Masked value: [78]\[987]

patterns ({ [character: string]: { pattern: RegExp, optional?: boolean})

We have next default patterns:

code	meaning
0	digits (like 0 to 9 numbers)
9	digits (like 0 to 9 numbers), but optional
A	letters (uppercase or lowercase) and digits
S	only letters (uppercase or lowercase)
U	only letters uppercase
L	only letters lowercase

Usage

<input type="text" [patterns]="customPatterns" mask="(000-000)" />

and in your component

public customPatterns = { '0': { pattern: new RegExp('\[a-zA-Z\]')} };

Then

Input value: 789HelloWorld
Masked value: (Hel-loW)

Custom pattern for this

You can define custom pattern and specify symbol to be rendered in input field.

pattern = {
    B: {
        pattern: new RegExp('\\d'),
        symbol: 'X',
    },
};

prefix (string)

You can add prefix to you masked value

Usage

<input type="text" prefix="+7" mask="(000) 000 00 00" />

suffix (string)

You can add suffix to you masked value

Usage

<input type="text" suffix="$" mask="0000" />

dropSpecialCharacters (boolean | string[])

You can choose if mask will drop special character in the model, or not, default value is true.

Usage

<input type="text" [dropSpecialCharacters]="false" mask="000-000.00" />

Then

Input value: 789-874.98
Model value: 789-874.98

showMaskTyped (boolean)

You can choose if mask is shown while typing, or not, default value is false.

Usage

<input mask="[phone]" prefix="+7" [showMaskTyped]="true" />

allowNegativeNumbers (boolean)

You can choose if mask will allow the use of negative numbers. The default value is false.

Usage

<input type="text" [allowNegativeNumbers]="true" mask="separator.2" />

Then

Input value: -10,000.45
Model value: -10000.45

placeHolderCharacter (string)

If the showMaskTyped parameter is enabled, this setting customizes the character used as placeholder. Default value is _.

Usage

<input mask="[phone]" prefix="+7" [showMaskTyped]="true" placeHolderCharacter="*" />

clearIfNotMatch (boolean)

You can choose clear the input if the input value not match the mask, default value is false.

Pipe with mask expression and custom Pattern ([string, pattern])

You can pass array of expression and custom Pattern to pipe.

Usage

<span>{{phone | mask: customMask}}</span>

and in your component

customMask: [string, pattern];

pattern = {
    P: {
        pattern: new RegExp('\\d'),
    },
};

this.customMask = ['PPP-PPP', this.pattern];

Repeat mask

You can pass into mask pattern with brackets.

Usage

<input type="text" mask="A{4}" />

Thousand separator

You can divide your input by thousands, by default will seperate with a space.

Usage

<input type="text" mask="separator" />

For separate input with dots.

<input type="text" mask="separator" thousandSeparator="." />

For using decimals enter . and how many decimals to the end of your input to separator mask.

<input type="text" mask="separator.2" />

Input value: 1234.56
Masked value: 1 234.56

Input value: 1234,56
Masked value: 1.234,56

Input value: 1234.56
Masked value: 1,234.56

<input type="text" mask="separator.2" thousandSeparator="." />
<input type="text" mask="separator.2" thousandSeparator="," />
<input type="text" mask="separator.0" thousandSeparator="." />
<input type="text" mask="separator.0" thousandSeparator="," />

For limiting decimal precision add . and the precision you want to limit too on the input. 2 is useful for currency. 0 will prevent decimals completely.

Input value: 1234,56
Masked value: 1.234,56

Input value: 1234.56
Masked value: 1,234.56

Input value: 1234,56
Masked value: 1.234

Input value: 1234.56
Masked value: 1,234

<input type="text" mask="separator.2" [leadZero]="true" />

To add zeros to the model at the end

Input value: 12
Masked value: 12.00

Input value: 12.1
Masked value: 12.10

<input type="text" mask="separator.2" separatorLimit="1000" />

For limiting the number of digits before the decimal point you can set separatorLimit value to 10, 100, 1000 etc.

Input value: 12345678,56
Masked value: 1.234,56

Time validation

You can validate your input as 24 hour format.

Usage

<input type="text" mask="Hh:m0:s0" />

Date validation

You can validate your date.

Usage

<input type="text" mask="d0/M0/0000" />

leadZeroDateTime (boolean)

If the leadZeroDateTime parameter is true, skipped symbols of date or time will be replaced by 0. Default value is false.

Usage

<input type="text" mask="d0/M0/0000" [leadZeroDateTime]="true" />

Input value: 422020
Masked value: 04/02/2020

<input type="text" mask="Hh:m0:s0" [leadZeroDateTime]="true" />

Input value: 777
Masked value: 07:07:07

Percent validation

You can validate your input for percents.

Usage

<input type="text" mask="percent" suffix="%" />

FormControl validation

You can validate your formControl, default value is true.

Usage

<input type="text" mask="00 00" [validation]="true" />

Secure input

You can hide symbols in input field and get the actual value in formcontrol.

Usage

<input placeholder="Secure input" [hiddenInput]="true" mask="XXX/X0/0000" />

IP valid mask

Usage

<input mask="IP" />

CPF_CNPJ valid mask

Usage

<input mask="CPF_CNPJ" />

Allow few mask in one expression

Usage

You can pass into mask pattern with ||.

<input mask="000.000.000-00||00.000.000/0000-00" />

<input mask="[phone]||(00) 0 0000-0000" />

<input mask="00||SS" />

Function maskFilled

Usage

<input mask="0000" (maskFilled)="maskFilled()" />