react-cookie

Universal cookies for React

## Integrations - [`universal-cookie`](https://www.npmjs.com/package/universal-cookie) - Universal cookies for JavaScript - [`universal-cookie-express`](https://www.npmjs.com/package/universal-cookie-express) - Hook cookies get/set on Express for server-rendering ## Minimum requirement ### react-cookie @ v3.0+ - React.js >= 16.3.0 (new context API + forward ref) ### react-cookie @ v0.0-v2.2 - React.js >= 15 ## Getting started `npm install react-cookie` or in the browser (global variable `ReactCookie`): ```html ``` ## `` Set the user cookies On the server, the `cookies` props must be set using `req.universalCookies` or `new Cookie(cookieHeader)` - defaultSetOptions: You can set default values for when setting cookies. ## `useCookies([dependencies], [options])` Access and modify cookies using React hooks. ```jsx const [cookies, setCookie, removeCookie] = useCookies(['cookie-name']); ``` **React hooks are available starting from React 16.8** ### `dependencies` (optional) Let you optionally specify a list of cookie names your component depend on or that should trigger a re-render. If unspecified, it will render on every cookie change. ### `options` (optional) - options (object): - doNotParse (boolean): do not convert the cookie into an object no matter what - doNotUpdate (boolean): do not update the cookies when the component mounts ```jsx const [cookies, setCookie, removeCookie] = useCookies(['cookie-name'], { doNotParse: true, }); ``` ### `cookies` Javascript object with all your cookies. The key is the cookie name. ### `setCookie(name, value, [options])` Set a cookie value - name (string): cookie name - value (string|object): save the value and stringify the object if needed - options (object): Support all the cookie options from RFC 6265 - path (string): cookie path, use `/` as the path if you want your cookie to be accessible on all pages - expires (Date): absolute expiration date for the cookie - maxAge (number): relative max age of the cookie from when the client receives it in seconds - domain (string): domain for the cookie (sub.domain.com or .allsubdomains.com) - secure (boolean): Is only accessible through HTTPS? - httpOnly (boolean): Can only the server access the cookie? **Note: You cannot get or set httpOnly cookies from the browser, only the server.** - sameSite (boolean|none|lax|strict): Strict or Lax enforcement - partitioned (boolean): Indicates that the cookie should be stored using partitioned storage ### `removeCookie(name, [options])` Remove a cookie - name (string): cookie name - options (object): Support all the cookie options from RFC 6265 - path (string): cookie path, use `/` as the path if you want your cookie to be accessible on all pages - expires (Date): absolute expiration date for the cookie - maxAge (number): relative max age of the cookie from when the client receives it in seconds - domain (string): domain for the cookie (sub.domain.com or .allsubdomains.com) - secure (boolean): Is only accessible through HTTPS? - httpOnly (boolean): Can only the server access the cookie? **Note: You cannot get or set httpOnly cookies from the browser, only the server.** - sameSite (boolean|none|lax|strict): Strict or Lax enforcement - partitioned (boolean): Indicates that the cookie should be stored using partitioned storage ### `updateCookies()` Read back the cookies from the browser and triggers the change listeners. This should normally not be necessary because this library detects cookie changes automatically. ## `withCookies(Component)` Give access to your cookies anywhere. Add the following props to your component: - cookies: Cookies instance allowing you to get, set and remove cookies. - allCookies: All your current cookies in an object. Your original static properties will be hoisted on the returned component. You can also access the original component by using the `WrappedComponent` static property. Example: ```jsx function MyComponent() { return null; } const NewComponent = withCookies(MyComponent); NewComponent.WrappedComponent === MyComponent; ``` ## Cookies ### `get(name, [options])` Get a cookie value - name (string): cookie name - options (object): - doNotParse (boolean): do not convert the cookie into an object no matter what ### `getAll([options])` Get all cookies - options (object): - doNotParse (boolean): do not convert the cookie into an object no matter what ### `set(name, value, [options])` Set a cookie value - name (string): cookie name - value (string|object): save the value and stringify the object if needed - options (object): Support all the cookie options from RFC 6265 - path (string): cookie path, use `/` as the path if you want your cookie to be accessible on all pages - expires (Date): absolute expiration date for the cookie - maxAge (number): relative max age of the cookie from when the client receives it in seconds - domain (string): domain for the cookie (sub.domain.com or .allsubdomains.com) - secure (boolean): Is only accessible through HTTPS? - httpOnly (boolean): Can only the server access the cookie? **Note: You cannot get or set httpOnly cookies from the browser, only the server.** - sameSite (boolean|none|lax|strict): Strict or Lax enforcement - partitioned (boolean): Indicates that the cookie should be stored using partitioned storage ### `remove(name, [options])` Remove a cookie - name (string): cookie name - options (object): Support all the cookie options from RFC 6265 - path (string): cookie path, use `/` as the path if you want your cookie to be accessible on all pages - expires (Date): absolute expiration date for the cookie - maxAge (number): relative max age of the cookie from when the client receives it in seconds - domain (string): domain for the cookie (sub.domain.com or .allsubdomains.com) - secure (boolean): Is only accessible through HTTPS? - httpOnly (boolean): Can only the server access the cookie? **Note: You cannot get or set httpOnly cookies from the browser, only the server.** - sameSite (boolean|none|lax|strict): Strict or Lax enforcement - partitioned (boolean): Indicates that the cookie should be stored using partitioned storage ## Simple Example with React hooks ```tsx // Root.tsx import React from 'react'; import App from './App'; import { CookiesProvider } from 'react-cookie'; export default function Root(): React.ReactElement { return ( ); } ``` ```tsx // App.tsx import React from 'react'; import { useCookies } from 'react-cookie'; import NameForm from './NameForm'; interface CookieValues { name?: string; } function App(): React.ReactElement { const [cookies, setCookie] = useCookies<'name', CookieValues>(['name']); function onChange(newName: string): void { setCookie('name', newName); } return (

{cookies.name &&

Hello {cookies.name}!

}

); } export default App; ``` ## Simple Example with Higher-Order Component ```tsx // Root.tsx import React from 'react'; import App from './App'; import { CookiesProvider } from 'react-cookie'; export default function Root(): React.ReactElement { return ( ); } ``` ```tsx // App.tsx import React, { Component } from 'react'; import { withCookies, Cookies, ReactCookieProps } from 'react-cookie'; import NameForm from './NameForm'; interface State { name: string; } interface Props extends ReactCookieProps { cookies: Cookies; } class App extends Component { constructor(props: Props) { super(props); const { cookies } = props; this.state = { name: cookies.get('name') || 'Ben', }; } handleNameChange(name: string): void { const { cookies } = this.props; cookies.set('name', name, { path: '/' }); this.setState({ name }); } render(): React.ReactNode { const { name } = this.state; return (

{this.state.name &&

Hello {this.state.name}!

}

); } } export default withCookies(App); ``` ## Server-Rendering Example ```ts // src/components/App.ts import React from 'react'; import { useCookies } from 'react-cookie'; import NameForm from './NameForm'; function App() { const [cookies, setCookie] = useCookies(['name']); function onChange(newName: string) { setCookie('name', newName, { path: '/' }); } return (

{cookies.name &&

Hello {cookies.name}!

}

); } export default App; ``` ```ts // src/server.ts import React from 'react'; import ReactDOMServer from 'react-dom/server'; import { CookiesProvider } from 'react-cookie'; import { Request, Response } from 'express'; import Html from './components/Html'; import App from './components/App'; export default function middleware(req: Request, res: Response) { const markup = ReactDOMServer.renderToString( , ); const html = ReactDOMServer.renderToStaticMarkup(); res.send('' + html); } ``` ```ts // src/client.ts import React from 'react'; import { createRoot } from 'react-dom/client'; import { CookiesProvider } from 'react-cookie'; import App from './components/App'; const root = createRoot(document.getElementById('main-app')); root.render( , ); ``` ```ts // server.ts import express from 'express'; import serverMiddleware from './src/server'; import cookiesMiddleware from 'universal-cookie-express'; const app = express(); app.use(cookiesMiddleware()).use(serverMiddleware); app.listen(8080, function () { console.log('Listening on 8080...'); }); ```

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