Question

After having chosen a file for upload, I want the file to be uploaded to database without the click of a button. How is this done using jQuery?

I would like to choose a file like this:
https://i.stack.imgur.com/0408T.gif

<input type="file" valign="baseline" />

Answer 1

Assuming you’re using a form:

// select the file input (using a id would be faster)
$('input[type=file]').change(function() { 
    // select the form and submit
    $('form').submit(); 
});

EDIT: To keep this answer up-to-date:

There is a nice way to upload files via AJAX without hacks described here:
http://net.tutsplus.com/tutorials/javascript-ajax/uploading-files-with-ajax/