A React Google Login Component
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README.md

React Google Login

A Google oAUth Sign-in / Log-in Component for React

Install

npm install react-google-login

How to use

import React from 'react';
import ReactDOM from 'react-dom';
import GoogleLogin from 'react-google-login';
// or
import { GoogleLogin } from 'react-google-login';


const responseGoogle = (response) => {
  console.log(response);
}

ReactDOM.render(
  <GoogleLogin
    clientId="658977310896-knrl3gka66fldh83dao2rhgbblmd4un9.apps.googleusercontent.com"
    buttonText="Login"
    onSuccess={responseGoogle}
    onFailure={responseGoogle}
  />,
  document.getElementById('googleButton')
);

Google button without styling or custom buttom

ReactDOM.render(
  <GoogleLogin
    clientId="658977310896-knrl3gka66fldh83dao2rhgbblmd4un9.apps.googleusercontent.com"
    render={renderProps => (
      <button onClick={renderProps.onClick}>This is my custom Google button</button>
    )}
    buttonText="Login"
    onSuccess={responseGoogle}
    onFailure={responseGoogle}
  />,
  document.getElementById('googleButton')
);

onSuccess callback

If responseType is not 'code', callback will return the GoogleAuth object.

If responseType is 'code', callback will return the offline token for use on your server.

If you use the hostedDomain param, make sure to validate the id_token (a JSON web token) returned by Google on your backend server:

  1. In the responseGoogle(response) {...} callback function, you should get back a standard JWT located at response.hg.id_token
  2. Send this token to your server (preferably as an Authorization header)
  3. Have your server decode the id_token by using a common JWT library such as jwt-simple or by sending a GET request to https://www.googleapis.com/oauth2/v3/tokeninfo?id_token=YOUR_TOKEN_HERE
  4. The returned decoded token should have an hd key equal to the hosted domain you'd like to restrict to.

Logout

Use GoogleLogout button to logout the user from google.

    import { GoogleLogout } from 'react-google-login';
    <GoogleLogout
      buttonText="Logout"
      onLogoutSuccess={logout}
    >
    </GoogleLogout>

Parameters

params value default value description
clientId string REQUIRED
jsSrc string -
hostedDomain string - URL of the Javascript file normally hosted by Google
scope string profile email
responseType string permission Can be either space-delimited 'id_token', to retrieve an ID Token + 'permission' (or 'token'), to retrieve an Access Token, or 'code', to retrieve an Authorization Code.
accessType string online Can be either 'online' or 'offline'. Use offline with responseType 'code' to retrieve a refresh token
onSuccess function REQUIRED
onFailure function REQUIRED
onRequest function -
buttonText string Login with Google
className string -
style object -
disabledStyle object -
loginHint string -
prompt string -
tag string button sets element tag (div, a, span, etc
type string button sets button type (submit
autoLoad boolean false
fetchBasicProfile boolean true
disabled boolean false
discoveryDocs - https://developers.google.com/discovery/v1/using
uxMode string popup The UX mode to use for the sign-in flow. Valid values are popup and redirect.
theme string light If set to dark the button will follow the Google brand guidelines for dark. Otherwise it will default to light (https://developers.google.com/identity/branding-guidelines)
icon boolean true Show (true) or hide (false) the Google Icon
redirectUri string - If using ux_mode='redirect', this parameter allows you to override the default redirect_uri that will be used at the end of the consent flow. The default redirect_uri is the current URL stripped of query parameters and hash fragment.
isSignedIn boolean false If true will return GoogleUser object on load, if user has given your app permission
Google Scopes List: https://developers.google.com/identity/protocols/googlescopes
render function - Render prop to use a custom element, use renderProps.onClick

onSuccess callback ( w/ offline false)

onSuccess callback returns a GoogleUser object which provides access to all of the GoogleUser methods listed here: https://developers.google.com/identity/sign-in/web/reference#users .

You can also access the returned values via the following properties on the returned object.

property name value definition
googleId string Google user ID
tokenId string Token Id
accessToken string Access Token
tokenObj object Token details object
profileObj object Profile details object

onSuccess callback ( w/ offline true)

property name value definition
code object offline token

You can also pass child components such as icons into the button component.

  <GoogleLogin
    clientId={'658977310896-knrl3gka66fldh83dao2rhgbblmd4un9.apps.googleusercontent.com'}
    onSuccess={responseGoogle}
    onFailure={responseGoogle}
  >
    <FontAwesome
      name='google'
    />
    <span> Login with Google</span>
  </GoogleLogin>

onFailure callback

onFailure callback is called when either initialization or a signin attempt fails.

property name value definition
error string Error code
details string Detailed error description

Common error codes include:

error code description
idpiframe_initialization_failed initialization of the Google Auth API failed (this will occur if a client doesn't have third party cookies enabled)
popup_closed_by_user The user closed the popup before finishing the sign in flow.
access_denied The user denied the permission to the scopes required
immediate_failed No user could be automatically selected without prompting the consent flow.

More details can be found in the official Google docs:

Dev Server

npm run start

Default dev server runs at localost:8080 in browser. You can set IP and PORT in webpack.config.dev.js

Run Tests

npm run test:watch

Production Bundle

npm run bundle
Checkout my other login: React Instagram Login
Checkout keppelen's React Facebook Login

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