Learn how to use JavaScript to check and manipulate HTML form elements, and how to provide feedback to the user based on the validation results.

Learn what are the most effective ways to validate user input using HTML, JavaScript, and PHP. Discover best practices and tips for web security and user experience.

Scan-To-Input is a lightweight JavaScript plugin that detects input from most plug-and-play USB and Bluetooth hardware barcode or QR code scanners — which emulate keyboard input — and intelligently ...

The lifecycle of a simple HTML form is to allow the user to input data into its fields, then submit the data and reload the page. JavaScript lets us create a smoother alternative to this clunky ...

That's all it takes to create an HTML input element and assign it to a variable named "box." The box object doesn't become a text box until you give its type attribute a value of "text" as shown ...