A headless phone number input component built for usability.

Phone numbers are hard. Users expect to be able to enter phone numbers in the format they're used to. Here's the problem: most people are used to national - or even local phone number formats. If you offload phone number validation to your backend (or an API), resolving the ambiguity becomes difficult or even impossible.

This component helps you build a UI that gracefully guides your users towards unambiguous phone number formats. And you get the result in standard e164 format: ready for use with any telephony service.

Other libraries are generally heavy (phone number rulesets can be big - 99.1% of this library's footprint is due to libphonenumber-js), force you to use their UI, and can't handle copy & paste or edit-in-place. react-headless-phone-input is designed for usability-first, and lets you bring your own input components. In fact, your existing input fields will almost certainly work with no modifications. Plus, it supports optional lazy-loading with progressive enhancement powered by React Suspense.

Built with React Hooks.

Demo

Install both react-headless-input and libphonenumber-js:

npm i --save react-headless-phone-input libphonenumber-js

or

yarn add react-headless-phone-input libphonenumber-js

• 100% headless: Bring your own UI. You can use almost any input component you already have
• Lets users copy & paste phone numbers of any format
• Typescript support
• Built-in lazy-loading with progressive enhancement (clocks in at 40KB without lazy-loading)
• Detects the associated country, enabling international phone input.
• Lets users copy & paste phone numbers of any format
• Acts like a normal input: Doesn’t glitch if a user edits in-place or deletes template characters
• Validates number plausibility
• External state is standard e164 format

This library is headless: you bring your own UI, but it's almost as easy as using regular inputs.

Here's an example using tiny-flag-react to show the flag associated with the number's country:

import TinyFlagReact from "tiny-flag-react";
import PhoneFormatter from "react-headless-phone-input";
// import PhoneFormatter from "react-headless-phone-input/lazy"; RECOMMENDED
const [e164, setE164] = useState("");
<PhoneFormatter defaultCountry="US" value={e164} onChange={setE164}>
 {({ country, impossible, onBlur, onInputChange, inputValue }) => {
 return (
 <>
 <div style={{ display: "flex", alignItems: "center" }}>
 <span
 style={{
 fontSize: "24px",
 }}>
 {country ? (
 <TinyFlagReact
 country={country}
 alt={country + " flag"}
 fallbackImageURL={`https://cdn.jsdelivr.net/npm/react-flagkit@1.0.2/img/SVG/${country}.svg`}
 />
 ) : (
 <>✆</>
 )}
 </span>
 <input
 type="tel"
 value={inputValue}
 onBlur={onBlur}
 onChange={(e) => onInputChange(e.target.value)}
 />
 </div>
 {impossible && (
 <div style={{ color: "red" }}>Impossible phone number</div>
 )}
 </>
 );
 }}
</PhoneFormatter>;

Demo

Due to this library's dependence on libphonenumber-js, it clocks in at 38.7KB minified + gzipped. To improve your user's experience, react-headless-phone-component supports lazy loading with React Suspense with progressive auto-enachement. If your bundler supports dynamic imports and are using a compatible version of React, just swap react-headless-phone-input for react-headless-phone-input/lazy.

Your UI will render and can be used immediately. Once react-headless-phone-input loads, the component will be automatically upgraded. No other changes are required.

import PhoneFormatter from "react-headless-phone-input/lazy";

MIT