Jquery, Select Input File And Also Set It To Another Input

The website has 2 input fields, I only select 1 field and the other one is invisible. Now I want to change the .val() of the invisible one to the .val() of the selected one, so bot

Solution 1:

Your code is almost correct:

$('#hidden_input_file').val(fileSelect);

This will make jQuery change the value of an input. However, the value of input type="file" can never* be changed with JavaScript (nor Flash, nor any means programmatically). This is a security feature implemented in all end-user browsers to prevent websites from a trivial mischievery:

$('#hidden_input_file').on('blur', function (e) {
    $('#hidden_input_file').val('c:\passwords.txt'); // won't work
});

Enabling the programmatical change of a file URL that is to be uploaded from a user's computer would be a monstrous security issue.

*only applies to JavaScript on the web