Rich single page applications (SPAs) built with React.JS, Angular, and other frameworks are becoming ever more popular. When an SPA app creates data, how can the user download the data, as a file, to the desktop?Uploading too: how can the user upload files to the React.JS app for processing on the browser?TL;DR:  A working React.JS example via JSFiddle.

Creating and downloading a file from an application

For most web applications, files are downloaded from the server. The Content-typeand Content-Dispositionheaders are used to declare the file type and suggest to the browser how the file should be handled, including a suggested file name.In our case, we want to create or manage data using JavaScript within the SPA, then enable the user to download the data as a file. No server needed!Here are the steps:

#javascript #web-development #react