JSFiddle - React, Tailwind, and code Playground
HTML
<form id='form' name="myform" action="/echo/json/" METHOD='GET'>Search:
<input type='text' name='query' />
<input type="submit" value='submit' />
</form>
JavaScript
document.getElementsByTagName('input')[0].addEventListener('change', function () {
document.getElementById('form').submit();
});