What happens between uploading a file to an HTML form and submitting it?

Question

What happens to a file after it is uploaded into an HTML form but before it is submitted?

I uploaded my resume to this website https://studyhut.com/employment/ and t

Answer 1

What happens to a file after it is uploaded into an HTML form but before it is submitted?

but what is going on at the time that I Selected a file to upload and it shows the file name with the option to delete it

Note that it is now possible to set the .files property of an element to a FileList object having .length 0 and containing no File objects, see Make .files settable #2866.

Cannot be certain that the code at the document that you are referencing performs the same procedure without viewing the full HTML and JavaScript used at the document.