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https://github.com/xnimorz/svelte-input-mask

Input masking component for Svelte with simple API and rich customization
https://github.com/xnimorz/svelte-input-mask

credit-card custom-mask date-input input input-formatting mask number-input svelte svelte-component svelte-input svelte-input-mask svelte-mask

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Input masking component for Svelte with simple API and rich customization

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## Mask input with simple API and rich customization.

If you need to create an input for:

- credit card
- phone number
- date
- birthday
- numbers
- Or other custom mask

This project could help you in all this situations!

Take a look at our demos: https://codesandbox.io/s/svelte-input-mask-demo-xurgr

### How to use it:

Install it:

```
npm install --save svelte-input-mask
```

or if you're using yarn:

```
yarn add svelte-input-mask
```

Import `MaskInput` component:

```js
import MaskInput from "svelte-input-mask/MaskInput.svelte";
```

Use it (for example for CreditCard):

```js

```

Add event listeners:

```js

import MaskInput from 'svelte-input-mask/MaskInput.svelte';

let mask = '0000-0000-0000-0000';

const handleChange = ({ detail }) => {
console.log(detail.inputState.maskedValue); // stores the value of input

if (detail.inputState.maskedValue.indexOf('34') === 0 || detail.inputState.maskedValue.indexOf('37') === 0) {
mask = '0000-000000-00000';
return;
}

mask = '0000-0000-0000-0000';
};

```

Congrats! You made the first masked input :)

Checkout more usecases here: https://codesandbox.io/s/romantic-franklin-xurgr

### Where to use?

Credit cards:

```js

```

Phones (you still can change prefixes, country code like in credit card example):

```js

```

Dates:

```js

import MaskInput from 'svelte-input-mask/MaskInput.svelte';

let maskString = 'DD.MM.YYYY';
let mask = '00.00.0000';

const handleChange = ({ detail }) => {
const value = detail.inputState.maskedValue;
if (parseInt(value[6], 10) > 2) {
maskString = 'DD.MM.YY';
mask = '00.00.00';
} else {
maskString = 'DD.MM.YYYY';
mask = '00.00.0000';
}
};

```

Numbers:

```js

import NumberInput from 'svelte-input-mask/NumberInput.svelte';

```

### Which props it has?

Mask input has next props:

| Prop | Default value | Description |
| -------------- | ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| value | - | The value of the input. Will be processed to masked one. In this case you can control the value of the component |
| defaultValue | - | The default value of the input. Will be applied only during the first render |
| maskString | - | The mask string to show if there are no filled chars. It's length should be the same as `mask`. Example: `'DD.MM.YYYY'` |
| maskChar | '' | In case you don't need a custom string you can define only a definite char for mask. Example: `maskChar = '_'` and `mask = '0000-0000-0000-0000'` will give: `____-____-____-____` |
| mask | - | The mask of the input. Could be a credit card: `'0000-0000-0000-0000'`, date: `00.00.0000` or whatever you want :) Doesn't work if `reformat` prop is setted |
| maskFormat | regexp | The regexp for custom formatting. You may use it if you want to define a specific mask. See example here: https://github.com/xnimorz/masked-input/blob/master/packages/input-core/src/index.ts#L16-L28 |
| alwaysShowMask | false | Flag to show the mask |
| showMask | false | Show mask if there is any data in input |
| reformat | - | The function, which defines a custom formatting rules. In case if you can't describe the format only with mask (e.g. numbers). If you use this prop `mask` prop will be ignored |

Svelte mask input pass all props that it doesn't handle right to `input` html element.

### Quick start examples at local machine

```
git clone [email protected]:xnimorz/svelte-input-mask.git
cd svelte-input-mask/example
yarn install
yarn dev
```

### Requirements:

Svelte should be installed in your project. Check the minimal Svelte version here: https://github.com/xnimorz/svelte-input-mask/blob/master/package.json#L42