expressjsHow do I download a zip file using Express.js?

To download a zip file using Express.js, you will need to use the express.static middleware.

First, you'll need to create a route in the Express server that will serve the zip file:

// Serve zip file
app.get('/download', function(req, res){
  res.download('/path/to/zipfile.zip');
});

Then, you'll need to use the express.static middleware to make the zip file accessible to the client.

// Serve static files
app.use(express.static(__dirname + '/public'));

Finally, you can send an AJAX request from the client side to the route you created to trigger the download:

// Send AJAX request
$.ajax({
  url: '/download',
  type: 'GET',
  success: function(data) {
    console.log('Download successful!');
  }
});

The client will then receive the zip file, which can be opened and used as needed.

Code explanation

1. Create a route in the Express server that will serve the zip file:

   // Serve zip file
   app.get('/download', function(req, res){
     res.download('/path/to/zipfile.zip');
   });

2. Use the express.static middleware to make the zip file accessible to the client:

   // Serve static files
   app.use(express.static(__dirname + '/public'));

3. Send an AJAX request from the client side to the route you created to trigger the download:

   // Send AJAX request
   $.ajax({
     url: '/download',
     type: 'GET',
     success: function(data) {
       console.log('Download successful!');
     }
   });

Helpful links

• Express.js static middleware
• jQuery AJAX

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