react-input-auto-format

React Input Auto Format (catchy, I know) automatically formats the value of an input field while you're typing in it.

<Input format="## - ## - ##">

Quickstart

Install it:

npm install react-input-auto-format

Have fun:

import Input from 'react-input-auto-format';

function Foo () {
    return <Input format="## - ## - ##" />;
}

The format prop accepts a pattern. The # character represents any number or letter, and you can put whatever else you like in there.

Examples:

Style	Pattern	Result
Expiry date	## / ##	12 / 34
Sort code	## - ## - ##	12 - 34 - 56
Number plate	#### ###	LM68 XKC

Getting the raw value

To get the unformatted value, use the onValueChange prop.

function Foo () {
    handleValueChange(value) {
        console.log(value); // 123456
    }

    return <Input
        format="## - ## - ##"
        onValueChange={handleValueChange}
    />;
}

Everything else

All other props work the same as you would expect for a native input component. If you want the formatted value, use a standard onChange attribute and pull out event.target.value.