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How to delete specific cache data in ReactJS ?
  • Last Updated : 26 Apr, 2021

We can use the following approach in ReactJS to delete specific cache data in ReactJS. We can delete specific cache data from the browser as per the user requirement. Caching is a technique that helps us to stores a copy of a given resource into our browser and serves it back when requested.

Approach: Follow these simple steps in order to delete specific cache data in ReactJS. We have created our deleteSpecificCache function which takes the cache name and deletes it from the browser cache. When we click on the button, the function is triggered, and the given cache gets deleted from the browser and, and we see an alert popup.

Creating 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: It will look like the following.

Project Structure

Example: Now write down the following code in the App.js file. Here, App is our default component where we have written our code.

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:

My Personal Notes arrow_drop_up
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