download comma separated file, react

Download Comma Separated File in React

Introduction

In this tutorial, we will learn how to download a comma-separated file in a React application. We will be using the FileSaver.js library to achieve this functionality. The FileSaver.js library is used to save files on the client-side.

Step 1: Install FileSaver.js

The first step is to install the FileSaver.js package using npm. Open your terminal and run the following command:

npm install file-saver --save

Step 2: Create a Function to Download the CSV File

The next step is to create a function that will handle the CSV file download. In this function, we will create a new Blob object that will contain the data of the CSV file. We will then use the FileSaver.saveAs() function to download the file.

import FileSaver from 'file-saver';

function downloadCSV() {
  const data = [
    ['Name', 'Age', 'Gender'],
    ['John Doe', '30', 'Male'],
    ['Jane Doe', '25', 'Female'],
  ];

  const blob = new Blob([data], { type: 'text/csv;charset=utf-8' });
  FileSaver.saveAs(blob, 'data.csv');
}

In the above code, we have created a function called downloadCSV(). Inside this function, we have defined an array of data that we want to include in the CSV file. We have then created a new Blob object that will contain this data. The type property of the Blob object specifies that the file type is CSV. Finally, we have used the FileSaver.saveAs() function to download the file. The first argument of the function is the Blob object, and the second argument is the name of the file.

Step 3: Call the Function

The final step is to call the downloadCSV() function. We can do this by adding a button to our React component and attaching an onClick event handler to it.

import React from 'react';

function App() {
  return (
    <div>
      <button onClick={downloadCSV}>Download CSV</button>
    </div>
  );
}

export default App;

In the above code, we have added a button to our React component that will call the downloadCSV() function when clicked.

Conclusion

In this tutorial, we have learned how to download a comma-separated file in a React application using the FileSaver.js library. We have created a function to handle the file download, and we have called this function from a button in our React component.