Comprehensive Guide to Universal-Cookie for Efficient Cookie Management in React

The universal-cookie library is a versatile solution for managing cookies in JavaScript applications. This robust library allows developers to handle cookies seamlessly both on the client-side (browser) and server-side (Node.js). This guide provides an in-depth look at the most useful APIs provided by universal-cookie, complete with code snippets and practical examples.

Installation

First, install the library using npm or yarn:

npm install universal-cookie

yarn add universal-cookie

Basic Usage

Import the library and create a new instance of Cookies:

import Cookies from 'universal-cookie'; const cookies = new Cookies();

API Methods

1. set(name, value, [options])

Sets a cookie with the given name, value, and optional cookie attributes:

cookies.set('myCookie', 'cookieValue', { path: '/', maxAge: 3600 });

2. get(name, [options])

Gets the cookie value for the given name:

const value = cookies.get('myCookie'); console.log(value);

3. getAll([options])

Gets all cookies:

const allCookies = cookies.getAll(); console.log(allCookies);

4. remove(name, [options])

Removes the cookie with the given name:

cookies.remove('myCookie');

5. check([options])

Checks if the browser has cookie enabled:

const isCookieEnabled = cookies.check(); console.log(isCookieEnabled);

Advanced Options

Domain, Path, and Secure Cookies

Cookies can be set with specific domains, paths, and security flags:

cookies.set('secureCookie', 'secureValue', { 
   path: '/', 
   domain: '.example.com', 
   secure: true 
});

Example React App

Below is an example of a simple React application that uses universal-cookie to manage cookies:

import React, { useState } from 'react'; import Cookies from 'universal-cookie';
const App = () => {
   const cookies = new Cookies();
   const [cookieValue, setCookieValue] = useState('');

   const handleSetCookie = () => {
      cookies.set('user', 'John Doe', { path: '/' });
      setCookieValue(cookies.get('user'));
   };

   const handleRemoveCookie = () => {
      cookies.remove('user');
      setCookieValue('');
   };

   return (
      

         
React Cookie Management
         Set Cookie
         Remove Cookie
         
Cookie Value: {cookieValue}
      
   );
};
export default App;

With this guide, you now have a comprehensive understanding of how to use the universal-cookie library to manage cookies in your JavaScript and React applications. Utilize these examples and methods to efficiently handle cookies in your projects.

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