Learn the language of the web.
Learn how to track progress and upload a CSS progress bar.
After reading a file, you can display it, edit it, post it to a server and download.
You'll want to push checkbox values into an array only if they are checked.
Get user coordinates using the HTML5 Geolocation API and map using Leaflet.js.
You can implement a QR code scanner using the Html5-QRCode library.
You can schedule tasks in Node.js using the node-schedule library.
When deciding which method to choose, object type should be taken into account.
By pushing data into loca, it is possible to calculate total and available space.