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react-imask

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react-imask

React input mask

  • 7.6.1
  • latest
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  • npm
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289K
decreased by-15.33%
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What is react-imask?

The react-imask package is a versatile input masking library for React applications. It allows developers to create input fields with predefined formats, ensuring that user input adheres to specific patterns. This is particularly useful for forms that require inputs like phone numbers, dates, credit card numbers, and more.

What are react-imask's main functionalities?

Basic Input Masking

This feature allows you to create a basic input mask for phone numbers. The mask ensures that the input follows the pattern (000) 000-0000.

import React from 'react';
import IMask from 'react-imask';

function PhoneInput() {
  return (
    <IMask.Input
      mask="(000) 000-0000"
      placeholder="(123) 456-7890"
    />
  );
}

export default PhoneInput;

Dynamic Masking

This feature demonstrates dynamic masking, where the input mask changes based on the input value. For example, it changes the mask for American Express card numbers.

import React, { useState } from 'react';
import IMask from 'react-imask';

function DynamicMaskInput() {
  const [mask, setMask] = useState('0000 0000 0000 0000');

  return (
    <IMask.Input
      mask={mask}
      placeholder="Enter your card number"
      onAccept={(value, mask) => {
        if (value.startsWith('34') || value.startsWith('37')) {
          setMask('0000 000000 00000'); // American Express
        } else {
          setMask('0000 0000 0000 0000'); // Other cards
        }
      }}
    />
  );
}

export default DynamicMaskInput;

Custom Masking with Regular Expressions

This feature allows you to use regular expressions for custom input masking. In this example, the input only accepts lowercase letters.

import React from 'react';
import IMask from 'react-imask';

function RegexMaskInput() {
  return (
    <IMask.Input
      mask={/^[a-z]*$/}
      placeholder="Enter lowercase letters only"
    />
  );
}

export default RegexMaskInput;

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Package last updated on 21 May 2024

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