MVC4 novalidate appearing in form novalidate="novalidate"

When veiwing the generated html in MVC4 I see this:

<form id="form0" action="/TicketDB/Create" method="post" data-ajax-update="#target" data-ajax-mode="replace" data-ajax="true" data-ajax-method="POST" jQuery17106042114308157038="3" sizcache09730110121886222="0" sizset="0" novalidate="novalidate">

In my MVC3 form I see this.

<form id="form0" action="/ticketDB/Create" method="post" jQuery1620512913517080009="228" data-ajax-update="#target" data-ajax-mode="replace" data-ajax-method="POST" data-ajax="true">

Why is there a change and how will this effect validation?

Re: MVC4 novalidate appearing in form novalidate="novalidate"

Without knowing how you are setup, this is normally done to deactivate HTML5 form validation.

Nothing to do with jQuery validation that is being done normally.

HTML5 inputs will normally prevent the submit from happening if it validates that it's not the proper format. This attribute prevent this behavior from happening.

Re: MVC4 novalidate appearing in form novalidate="novalidate"

The novalidate attribute is part of the HTML 5 standard specification and isn't tied to MVC in any way. See here http://www.w3schools.com/html5/att_form_novalidate.asp

Re: MVC4 novalidate appearing in form novalidate="novalidate"

Your statement is not entirely correct. Yes, this is standard HTML5 notation, however it is being generated by the MVC framework. In my situation I want to use the HTML5 validation and need to remove this attribute. Can anyone tell me how to instruct MVC not in emit this?