JSFiddle - React, Tailwind, and code Playground
HTML
<input type="file" name="file" id="file" />
<input type="submit" />
JavaScript
$("input[type=submit]").click(function(){
alert($("input[type=file]").val());
});
<input type="file" name="file" id="file" />
<input type="submit" />
$("input[type=submit]").click(function(){
alert($("input[type=file]").val());
});