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javascript - Client download of a server generated zip file - Stack Overflow
JSZip is a javascript library for creating, reading and blogger.com files, with a lovely and simple API. Current version: v License: JSZip is dual-licensed. My Node 4.X/Express 4.X server takes that list, gets the file locations, creates a zip file, using express-zip from npm, and then streams that file back in the response. I then want my client to initiate the browser's "download a file" option. zip sucks if you're on, say, a phone. you can just trigger all three downloads, and chrome even recognizes this and prompts the use if they want to allow your site to "download multiple files". if you want to use zip, you can ajax in the files, zip them using jszip, and then download the zip file from the resulting JS tree object. – dandavis Aug 26 '13 at
Javascript download zip file from server
I came across a peculiar use case in a recent project in which I needed to POST data from a form to the server, and then trigger a download for the payload of the response.
There might be a few reasons you would want to do this kind of trickery, but the key reason I can think of is generating something server-side based on form inputs from the client - such as an image or PDF - and then sending that generated asset back over the wire to the client. The desired experience for the user is just a simple "Download" button, so even javascript download zip file from server an asset is being dynamically generated, we want to give the illusion that they're just downloading.
So here we go! Step one is to set up the XHR request in Javascript. For some context, let's imagine a simple HTML form:. When this form is submitted, we're going to send the form data to the server, and expect a PDF back in return, generated dynamically, which is where the responseType comes in. Great now that we've wired up the submission, let's take a bit of time to talk about what's happening on the server's side.
I'm keeping this post backend agnostic, so I won't be discussing specific syntax. Javascript download zip file from server, the basic mechanics are pretty simple. The server will accept the incoming POST request, and parse out the form data. It will then use that form data to generate some type of file, such as a PDF, represented in memory as Binary data. You'll pipe that binary data back to the user as the response to the POST request. Remember that on the client side, we've set the request to expect a Blob.
With that in mind, it's time to focus on what to do for the response. For this, we'll make use of the request's onload function, javascript download zip file from server. Finally, let's combine all of this together into a single event listener that is fired with the form is submitted. The Request. What is a Blob? The Response. All Together Now.
Ep6 - React Download Zip File: Create File sharing web app with Express & ReactJs from Scratch
, time: 26:33Javascript download zip file from server
What is the best way to download file from server. Ask Question Asked 7 years, 6 months ago. Let say that you have the file for downloading at blogger.com and you have some parametres to pass from your javascript, eg blogger.com?p1=&p2= to know what you going to create. How to debug corrupt zip file generation? 1. Aug 29, · While we’re doing amazing things with JavaScript on the server side, it’s important not to take our eyes off of some of the great stuff happening on the client side. One such awesome project I recently discovered was JSZip: a JavaScript library that allows you to easily generate ZIP files from the front-end. And why . Jul 07, · Triggering a File Download from an XHR Post Request / July 7, I came across a peculiar use case in a recent project in which I needed to POST data from a form to the server, and then trigger a download for the payload of the response. Blobs represent data that isn’t necessarily in a JavaScript-native format. The File interface is.
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