jsfiddle-console example
https://github.com/eu81273/jsfiddle-console
by kzoon
HTML
<script src="https://rawgit.com/eu81273/jsfiddle-console/master/console.js"></script>
<input type="file" class="filepond" name="filepond" data-max-files="2" multiple/>
JavaScript
for (var i = 0; i < 2; i++) {
console.log(i); // 0, 1, 2, 3, 4
}
throw new Error('This is error console log..');