To output the swing states array as a file, first choose an output format. The array’s storage in memory is implementation-specific: Firefox’s memory layout for an array can be different from Chrome’s.

For example, consider a JavaScript array containing the names of the US 2020 Election swing states (Pennsylvania, Florida, Ohio, Michigan, Arizona, North Carolina, Wisconsin, and Iowa). JavaScript variables and structures (objects and arrays) are processed in a native binary format.

Here are the steps: Choose and create an output format 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. The Content-type and Content-Disposition headers are used to declare the file type and suggest to the browser how the file should be handled, including a suggested file name. Creating and downloading a file from an applicationįor most web applications, files are downloaded from the server. TL DR: A working React.JS example via JSFiddle. Uploading too: how can the user upload files to the React.JS app for processing on the browser? When an SPA app creates data, how can the user download the data, as a file, to the desktop?

Rich single page applications (SPAs) built with React.JS, Angular, and other frameworks are becoming ever more popular.

Javascript download a file