js

One JavaScript file of 50 bytes, containing a single console.log call. Like HTML, a JS file is code that browsers run, so an upload form that accepts it needs care: served from your own domain with the wrong headers, it can become part of an attack. Use the file to check what MIME type your server sends (text/javascript), that the file downloads as an attachment and does not run, and that your upload rules treat .js as you intend. It is also a tiny sample for bundlers and linters, and for testing a content security policy.