The novalidate Attribute

Firefox 4+	Safari 7-	Safari 7-	Chrome 10+	Opera 10.0+	IE 10+	Android 4.2+

The Low Down

novalidate if a form-level attribute used to turn off validation for a form, despite the attributes of the inputs it contains (i.e. will override inputs with therequired attribute, or that would otherwise fail validation).

• Forms naturally validate, no special attributes needed. This special attribute is needed to turn that off. Include it only on the <form> opening tag.
• You might use this if you plan to do your own client-side validation, if you want to create your own validation bubbles, or if you plan to go all server-side validation (which you need to do anyway).
• Do not use novalidate if you simply want to internationalize or otherwise change the content of the default error messages. This can be done with JavaScript.
• This is a classic example of why server side validation is extra important: one little change in development tools can force an entire form to skip validation allowing bad data to go through.
• While Safari, iOS and Android to support the validation object, the form is sumbmitted whether the form validates or not, as if the novalidateattribute was always present.