Oleg Mikheev looks under the hood of the Struts 2 validation mechanism and shows you how its Java, JavaScript, and Ajax support can take the pain out of Web-form validation.

Vest is a new framework-agnostic form validation library that separates the validation logic from the feature logic while using a unit testing syntax style that is similar to Mocha and Jasmine.

Do you need to perform an Ajax file upload with pure JavaScript? This example lays out the steps to accomplish an Ajax file upload without the need for a JavaScript library like jQuery or Dojo.

Here's how to integrate the ASP.NET CustomValidator control with client-side code to create a page that uses Ajax and server-side code to validate data at the browser.

Description: The project includes login.html and signup.html, but based on the structure: There is likely no client-side form validation in JavaScript. Users can submit empty fields, invalid email ...