@matt-block/react-recaptcha-v2 NPM

React reCAPTCHA v2

React wrapper component for Google's reCAPTCHA v2 service, built with TypeScript and Rollup.

Features

Does not pollute the DOM by cleaning up on unmount (see below)
Can safely add multiple <ReCaptcha> components in the same page, they will not conflict with each other.
TypeScript and Flow type declarations

DOM Pollution and Cleanup

<ReCaptcha> will handle all its dirt that is automatically added to the DOM: according to the official reCAPTCHA Documentation, a <script> must be added in the head section of our HTML document. However, it is not explained that, once that script is loaded, more elements will be automatically added to the DOM, outside of out React tree.

Once the component is unmounted, all that has been directly and indirectly added will be removed, leaving a clean document:

Cleanup

Compatibility

This library will always target the most recent React package. If you are using an older release of React, use the correct version of this library from the compatibility table below (if available):

React	Library	Status	End-of-Life
`>=16.8.0`		Active	-
`16.0.0 - 16.7.x`		Maintenance	2023-06-01

Migrating from 1.x to 2.x

The current version requires React 16.8.0 or above. If you are stuck with an older version, you could:

Not migrate to version 2 and continue to use a 1.x release, though support will end soon.
Move to a different package for Google reCAPTCHA v2, like:
- react-google-recaptcha which requires React 16.4.1 or above.
- react-recaptcha which required React 15.5.4 or above

Installation

Install the package via npm or Yarn:

npm install --save @matt-block/react-recaptcha-v2

// or

yarn add @matt-block/react-recaptcha-v2

That is all, no <script> needs to be added to your main HTML file as this is handled automatically by the component.

Usage

import React from "react";
import ReCaptcha from "@matt-block/react-recaptcha-v2";

const MyFormComponent = () => {
  // other logic and hooks...

  return (
    {/* other components to render... */}
    <ReCaptcha
      siteKey="6LeIxAcTAAAAAJcZVRqyHh71UMIEGNQ_MXjiZKhI"
      theme="light"
      size="normal"
      onSuccess={(captcha) => console.log(`Successful, result is ${captcha}`)}
      onError={() => console.log("Something went wrong, check your conenction")}
      onExpire={() => console.log("Verification has expired, re-verify.")}
    />
  );
}

Props

The only mandatory prop is siteKey which can be obtained from the reCAPTCHA Admin Panel, all other props are optional.

Prop	Type	Default	Description
`siteKey`	`string`	`undefined`	Required. Your site key or the value `"test"` which will inject the test key.
`theme`	`light` \| `dark`	`light`	The color theme of the widget.
`size`	`normal` \| `compact`	`normal`	The size of the widget.
`onSuccess`	`function`	`undefined`	Callback function, executed when the user submits a successful response. The response token is passed to your callback.
`onError`	`function`	`undefined`	Callback function, executed when reCAPTCHA encounters an error (usually network connectivity) and cannot continue until connectivity is restored. If you specify a function here, you are responsible for informing the user that they should retry.
`onExpire`	`function`	`undefined`	Callback function, executed when the reCAPTCHA response expires and the user needs to re-verify.