JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.0.0-beta1.js"></script>
<input id="1" />
<input id="2" />
<input />

JavaScript

var ids = $.map($("input"), function(el) {
  return el.id
}).filter(Boolean);

console.log(ids)