How to store single cache data in ReactJS ?

Last Updated : 02 Nov, 2023

Storing Data in a cache is an important task in web applications. We can cache some data into the browser and use it in our application whenever needed. Caching is a technique that helps us to store a copy of a given resource in our browser and serve it back when requested.

Prerequisites

React JS
CacheStorage

Approach

To store single cache data in React JS we will use the Windows cache that helps to access the cache stored in the browser window. Define a function that accesses named data in the cache storage and then puts the custom data the user needs to store in the browser.

Steps to create React Application

Step 1: Create a React application using the following command:

npx create-react-app foldername

Step 2: After creating your project folder i.e. folder name, move to it using the following command:

cd foldername

Project Structure:

Example: Created a addDataIntoCache function which takes the user data and store into the browser cache. When we click on the button, the function is triggered and data gets stored into the cache, and we see an alert popup.

App.js

// Filename - App.js

import * as React from "react";

export default function App() {
    // Function to add our give data into cache
    const addDataIntoCache = (cacheName, url, response) => {
        // Converting our response into Actual Response form
        const data = new Response(JSON.stringify(response));
        console.log(data);
        if ("caches" in window) {
            // Opening given cache and putting our data into it
            caches.open(cacheName).then((cache) => {
                cache.put(url, data);
                alert("Data Added into cache!");
            });
        }
    };

    return (
        <div
            style={{
                height: 500,
                width: "80%",
                textAlign: "center",
                margin: "auto",
            }}
        >
            <h1 style={{ color: "green" }}>
                GeeksforGeeks
            </h1>
            <h4>Store data into cache in React JS</h4>
            <button
                onClick={() =>
                    addDataIntoCache(
                        "MyCache",
                        "https://www.geeksforgeeks.org/",
                        "SampleData"
                    )
                }
            >
                Add Data Into Cache
            </button>
        </div>
    );
}