I have a javascript app that sends ajax POST requests to a certain URL. Response might be a JSON string or it might be a file (as an attachment). I can easily detect Content-Type and Content-Dispos It may have its own reasons like showing the download progress of the file in the applicaton's UI itself. Another reason may be monetization - the application can show an advertisement to the user while the file is being downloaded. This tutorial shows how to make an AJAX request to download a file, and showing the download percentage completed Downloading file using ajax and jquery after submitting form data using ajax HTTP POST in MVC. Comments | Share. Many a times we find a need to download a file on doing a AJAX POST request. Normally we would just use the Response.Write to write the fileStream to the MVC Output response, Hi, I am starting with ajax and got a problem with a download I would like to make via AJAX. $( document ).ready(function() { console.log("jQuery Version Download a file via AJAX - jQuery Forum Using XMLHTTPRequest (ajax) transporting data between client and server has been popular for a while. Sometimes, we want our browser to retrieve binary data from server (as ArrayBuffer or Blob) such as pdf, image, and psd files. This post will go through how to achieve it with XMLHTTPRequest and jQuery. Download Binary using XMLHTTPRequest Arises more problem when need to create multiple zip files on page load for download. To avoid this type of problem you can either use only PHP or jQuery AJAX to create and download the zip file when it’s required. Occasionally I stumble upon the need to download files from POST requests. An example would be generating PDF files, where the PDF content is dependent on the request. Interestingly this is not as straightforward as you may think, but it's not that hard either. A simple server