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react-native-mask-input

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Readme

React Native Masked Text Input

A simple and effective Text Input with mask for ReactNative on iOS and Android. No fancy stuff, it's basically a JavaScript function that allow you to use custom masks easily.

Features

Highly custom masks with the use of RegExp
Characteres obfuscation!
It's just a <TextInput/> component, as I said, no fancy stuff
Use React Native ES6 and React Hooks
Exports the function that do all the magic: formatWithMask

Installation

npm install react-native-masked-text-input

yarn add react-native-masked-text-input

Usage

import MaskedTextInput from 'react-native-masked-text-input';

function MyComponent() {
  const [phone, setPhone] = React.useState('');

  return (
    <MaskedTextInput
      value={phone}
      onChangeValue={(masked, unmasked) => {
        setPhone(masked); // you can use the unmasked value as well

        // assuming you type "9" all the way, in example:
        console.log(masked); // (99) 99999-9999
        console.log(unmasked); // 99999999999
      }}
      mask={[
        '(',
        /\d/, // that's because I want it to be a digit (0-9)
        /\d/,
        ')',
        ' ',
        /\d/,
        /\d/,
        /\d/,
        /\d/,
        /\d/,
        '-',
        /\d/,
        /\d/,
        /\d/,
        /\d/,
      ]}
    />
  );
}

Props

Prop	Type	Default	Description
...TextInputProps			Inherit all props of `TextInput`.
`value`	number		The value for controlled input. REQUIRED
`onChangeText`	function		Callback that is called when the input's text changes. differently of the default function, this one receive three arguments: `(maskedText, unmaskedText, obfuscatedText) => void` REQUIRED
`mask`	Mask		An array where each item defines one character of the value. If the item is a string, that string will be used, if it is an RegExp, it will validate the input on it.
`showObfuscatedValue`	boolean	false	Whether or not to display the obfuscated value on the `TextInput`.
`placeholderFillCharacter`*	string	"_"	Character to be used as the "fill character" on the default placeholder value.
`obfuscationCharacter`	string	"*"	Character to be used on the obfuscated characteres.

Mask

An array where each item defines one character of the value. If the item is a string, that string will be used, if it is an RegExp, it will validate the input on it.

To be clear: All the characters you want to be inputed by the user must be a Regex in your mask.

If you want a mask for Zip Code, for example, you'd do like this:

const mask = [/\d/, /\d/, /\d/, /\d/, /\d/, '-', /\d/, /\d/, /\d/];

That's because the RegExp /\d/ accepts any digit character (0-9)

Example

See EXAMPLE

git clone https://github.com/caioquirinomedeiros/react-native-masked-text-input.git
cd react-native-masked-text-input/example
yarn
yarn android / yarn ios

`formatWithMask(options)`

import { formatWithMask, Masks } from 'react-native-masked-text-input';

const creditCard = '9999999999999999';

const { masked, unmasked, obfuscated } = formatWithMask({
  text: phone,
  mask: Masks.CREDIT_CARD,
  obfuscationCharacter: '-',
});

console.log(masked); // 9999 9999 9999 9999
console.log(unmasked); // 9999999999999999
console.log(obfuscated); // 9999 ---- ---- 9999

`options`

Name	Type	Default	Description
`text`	string		Text to be formatted with the mask.
`mask`	Mask		An array where each item defines one character of the value. If the item is a string, that string will be used, if it is an RegExp, it will validate the input on it.
`obfuscationCharacter`	string	"*"	Character to be used on the obfuscated characteres.

Contributing

See the contributing guide to learn how to contribute to the repository and the development workflow.

License

react-native-masked-text-input is released under the MIT license. See LICENSE for details.

Any question or support will welcome.