JSFiddle - React, Tailwind, and code Playground

HTML

<input class="file_upfile" type="file" />
<input class="btn_showpath" type="button" value="Show Full Path"/>

CSS

.p_upfilepath{
    background:#aaaaaa;
    padding:3px 10px;
    width:auto;
    color:#555555;
}

JavaScript

$('.btn_showpath').click(function () {
    var getpath = $('.file_upfile').val();
		alert(getpath);
    $.ajax({
        url: getpath,
        success: function (data) {
            alert('exists');
        },
        error: function (data) {
            alert('does not exists');
        }
    });
});