JSFiddle - React, Tailwind, and code Playground

HTML

<div id="property_enquiry">
    <input type="file" />
</div>

CSS

input {
    display: block;
}

JavaScript

$('#property_enquiry input[type=file]').live('change', function() {
    $('<input type="file" name="file[]">').insertAfter("input[type=file]:last");
});