JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" class="twitter-like" value="" />
<div>Remaining characters: <span class="twitter-counter" data-default-value="160"></span></div>

JavaScript

var counter = jQuery('span.twitter-counter[data-default-value]');
counter.html(counter.data('default-value'));
jQuery('input.twitter-like').bind('keyup',function(){
    counter.html(counter.data('default-value') - jQuery(this).val().length);
});