Displaying time relative to a date, and caching
Displaying an absolute date is factual, but sometimes a relative amount of time units between now and that date gives the reader a better understanding of the scale of time.
tag / JavaScript
Uploading CSV application/vnd.ms-excel MIME
When a file is uploaded as part of a form submission, its MIME is included. I've discovered that Firefox on Windows has an inconvenient way of determining this MIME.
A QR Code & Barcode reader with Barcode Detection API
The Barcode Detection Web API greatly facilitates writing a versatile Barcode or QR reader with a few lines of JavaScript.
How I proxied a file upload through a Next JS middleware
The short answer, it turns out that Axios knows what to do with a Buffer object.
Uploading large files with AJAX and jQuery
An introduction to the FileReader interface and where its strengths lie in AJAX file uploads.
Don’t Use React JS Portals Before Reading This
React portals are a powerful tool, but have some gotchas that you should be aware of.