How to delete specific cache data in ReactJS ?

In React, we can access all cache data from the browser and delete specific cache data from the browser as per the user's requirement whenever needed using the Cache Storage of the browser. 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:

• NPM & Node.js
• React JS
• Cache Storage

Approach:

To delete specific cache data in ReactJS we will create a deleteSpecificCache function which takes the cache name and deletes it from the browser cache. When we click on the button, the function is triggered, the given cache gets deleted from the browser, and we see an alert popup.

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: This example shows how to delete specific cache data from browser using the window cache.

// Filename - App.js

import * as React from "react";

export default function App() {
    // Function to delete our give cache
    const deleteSpecificCache = (cacheName) => {
        if ("caches" in window) {
            caches.delete(cacheName).then(function (res) {
                alert(cacheName);
                return res;
            });
        }
    };

    return (
        <div style={{ height: 500, width: "80%" }}>
            <h4>
                How to delete specific cache data in
                ReactJS?
            </h4>
            <button
                onClick={() =>
                    deleteSpecificCache("MyCache")
                }
            >
                Delete Specific Cache
            </button>
        </div>
    );
}

Step to Run Application: Run the application using the following command from the root directory of the project:

npm start

Output: Now open your browser and go to http://localhost:3000/, you will see the following output:

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Article Tags :

• JavaScript
• Web Technologies
• ReactJS
• React-Questions