An <object> element located outside a form (but still a part of the form):
The form attribute specifies one or more forms the <object> element belongs to.
|form||Not supported||Not supported||Not supported||Not supported||Not supported|
The form attribute is new in HTML5.
|form_id||Specifies the <form> element the <object> element belongs to. The value of this attribute must be the id attribute of a <form> element in the same document.|