How to add a submit form in post in wordpress

Question

Actually I want to create a plugin for wordpress and in my custom post type, I wan to create a popup which I append a div element on on document.body. In the document.body there is no form element available, when I checked the code of the web page with firebug, the form element on the web page only exist in the metabox. So, how could I do to add a file upload field to my div.

Answer 1

Try this one: i am sure this will helps you completely

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Thanks