Express JS Tutorial: Generate Excel File with Dynamic Data
Express JS is a popular web application framework for Node.js, and it provides a powerful and flexible way to build web applications and APIs. In this tutorial, we will learn how to generate an Excel file with dynamic data using Express JS.
Setup Express JS
First, make sure you have Node.js installed on your system. You can install Express JS by using the following command:
npm install express
Once Express JS is installed, create a new directory for your project and navigate into it. Then, create a new file called app.js and add the following code:
const express = require('express');
const app = express();
app.get('/export-excel', (req, res) => {
// Your code to generate the Excel file goes here
});
app.listen(3000, () => {
console.log('Server is running on port 3000');
});
Now, run the app by executing the following command in your terminal:
node app.js
Generate Excel File with Dynamic Data
To generate an Excel file with dynamic data, you can use a library like exceljs. Install it using the following command:
npm install exceljs
After installing exceljs, you can use it to generate an Excel file with dynamic data in your Express JS app. Here’s an example of how you can do this:
const Excel = require('exceljs');
app.get('/export-excel', (req, res) => {
let workbook = new Excel.Workbook();
let worksheet = workbook.addWorksheet('Sheet 1');
// Add dynamic data to the worksheet
worksheet.addRow(['Name', 'Age']);
worksheet.addRow(['John Doe', 30]);
worksheet.addRow(['Jane Smith', 25]);
// Generate the Excel file and send it as a response
res.set('Content-Type', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet');
res.set('Content-Disposition', 'attachment; filename=example.xlsx');
workbook.xlsx.write(res)
.then(function() {
res.end();
});
});
Now, when you navigate to http://localhost:3000/export-excel in your web browser, the server will generate an Excel file with the specified dynamic data and prompt you to download it.
Conclusion
In this tutorial, we have learned how to generate an Excel file with dynamic data using Express JS. By following the steps outlined in this article, you can easily create and serve Excel files with dynamic data in your web applications. Have fun coding!
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