Html5 Programming Language

My doctype is html5. I am validating this HTML: Solution 1: If you want it all to validate you'… Read more Error: An A Start Tag Seen But An Element Of The Same Type Was Already Open

I am using html 5 form validation for validate my form before submit, if is valid, submit, but I ne… Read more How To Create Html5 Custom Validation?

I am trying to do validation on a input based on value selected from a dropdown. JSFiddle: https://… Read more Dynamic Validation Using Ng-pattern Angularjs

I am trying to validate an input field using the following pattern but i get this error : Solution … Read more Uncaught Syntaxerror: Invalid Regular Expression

whenever i click on submit button it fires alert('empty username') but goes a head and dire… Read more Prevent Form From Posting Until Javascript Code Is Satisfied

I realize that you should never disable an element and also require it, because how could the user … Read more Html5 Form Validation With Required And Disabled Element