CSS or cascading style sheet is a web based application language which describes the presentation and style from the document that is written in a markup language.
Most of the internet pages are written in HTML and Extensible HTML language.
In particular, an HTML validator checks to make sure the HTML code on your web page complies with the standards set by the W3 Consortium, the organisation ("organization" in US English) that issues the HTML standards.
There are various types of HTML validators: some only check for errors, while others also make suggestions about your code, telling you when it might lead to (say) unexpected results.
There is also an article discussing how this plugin fits the bill of the should-be validation solution. Have a look at this example: A single line of j Query to select the form and apply the validation plugin, plus a few annotations on each element to specify the validation rules.
By Bill Evjen Reuters December 2003 Applies to: Microsoft® ASP. NET validation server controls that are at your disposal.
This particular one is one of the oldest j Query plugins (started in July 2006) and has proved itself in projects all around the world.
A variety of HTML elements, such as text boxes, check boxes, radio buttons, drop-down lists and more, can be used in forms. NET applications are collecting information from a user, you want to ensure that the data that you collect is valid.
Most often, the purpose of data validation is to ensure correct user input.
This paper focuses on a series of controls that stand out from the rest—.
Validation server controls are a series of controls that help you validate the data that the user enters into the other controls that are provided with ASP. They determine whether the form can be processed based upon the rules that you define in the validation server controls.
Again, you can get free validation for your style sheets from the W3 Consortium: https://jigsaw.w3.org/css-validator/ There are numerous other validators around, both free and commercial, focusing on different aspects of your web page.