React Google Recaptcha V3

Overview

react-google-recaptcha-v3 is a library created to assist integrating Google ReCaptcha V3 to your React App.

Install

npm install react-google-recaptcha-v3

Usage

Provide Recaptcha Key

To use react-google-recaptcha-v3, you need to create a recaptcha key for your domain, you can get one from here.

Components

GoogleReCaptchaProvider

react-google-recaptcha-v3 provides a GoogleReCaptchaProvider provider component that should be used to wrap around your components.

GoogleReCaptchaProvider's responsibility is to load the necessary reCaptcha script and provide access to reCaptcha to the rest of your application.

It also provides an optional prop language to support different languages that is supported by Google Recaptcha. https://developers.google.com/recaptcha/docs/language

import { GoogleReCaptchaProvider } from 'react-google-recaptcha-v3';

ReactDom.render(
  <GoogleReCaptchaProvider
    reCaptchaKey="[Your recaptcha key]"
    language="[optional_language]"
  >
    <YourApp />
  </GoogleReCaptchaProvider>,
  document.getElementById('app')
);

Afterwards, there are three ways to trigger the recaptcha validation, the first is using the GoogleReCaptcha component. The second is using the HOC withGoogleReCaptcha, and the last approach is using the custom hook useGoogleReCaptcha.

GoogleReCaptcha

GoogleRecaptcha is a react component that can be used in your app to trigger the validation. It provides a prop onVerify, which will be called once the verify is done successfully.

import {
  GoogleReCaptchaProvider,
  GoogleReCaptcha
} from 'react-google-recaptcha-v3';

ReactDom.render(
  <GoogleReCaptchaProvider reCaptchaKey="[Your recaptcha key]">
    <GoogleReCaptcha onVerify={token => console.log(token)} />
  </GoogleReCaptchaProvider>,
  document.getElementById('app')
);

withGoogleReCaptcha

GoogleRecaptcha is a HOC (higher order component) that can be used to integrate reCaptcha validation with your component and trigger the validation programmatically. It inject the wrapped component with googleReCaptchaProps object.

The object contains the executeRecaptcha function that can be called to validate the user action.

import {
  GoogleReCaptchaProvider,
  withGoogleReCaptcha
} from 'react-google-recaptcha-v3';

class ReCaptchaComponent extends React.Component {
  async componentDidMount() {
    const token = await this.props.googleReCaptchaProps.executeRecaptcha('homepage');
  }

  render() {
    ...
  }
}

const YourReCaptchaComponent = withGoogleReCaptcha(ReCaptchaComponent);

ReactDom.render(
  <GoogleReCaptchaProvider reCaptchaKey="[Your recaptcha key]">
    <YourReCaptchaComponent />
  </GoogleReCaptchaProvider>,
  document.getElementById('app')
);

React Hook: useGoogleReCaptcha

If you prefer a React Hook approach over the ol good Higher Order Component, you can choose to use the custom hook useGoogleReCaptcha over the HOC withGoogleReCaptcha.

It's very simple to use the hook:

import {
  GoogleReCaptchaProvider,
  useGoogleReCaptcha
} from 'react-google-recaptcha-v3';

// Remember that the hook can only be used within a React functional component
const YourReCaptchaComponent  = () => {
  const { executeRecaptcha } = useGoogleReCaptcha();
  const token = executeRecaptcha("login_page");

  return (...)
}

ReactDom.render(
  <GoogleReCaptchaProvider reCaptchaKey="[Your recaptcha key]">
    <YourReCaptchaComponent />
  </GoogleReCaptchaProvider>,
  document.getElementById('app')
);

Typescript

This project is written in typescript and fully support it.

Example

An example of how to use these two hooks can found inside the example folder.

YilongCoryWang/react-google-recaptcha-v3