HTML5 offers form field validation support built into the HTML form input tags that should greatly reduce the need for JavaScript validation code. In this post, I look at some examples of this.

Most top-ranking websites fail HTML validation. Google explains why perfect code isn’t required, and what matters instead.

Next, a quick program was written to automate the embedding of the Javascript. Grab the source code if you want to give it a try yourself.

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.

Registering the JavaScript Function The first step is to create a JavaScript function that registers a validation function with ASP.NET MVC's client-side list of validation functions. Your ...