JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<input type="text" value="" name="filter" id="filter"/>

<div id="options">some cool options</div>

JavaScript

$(function() {
  $('#filter').blur(function() {
    $('#options').hide();
  });
})