The simplest way to do this:
var input = document.getElementById('pac-input');
var output = document.getElementById('pac-output');
in jQuery is like this:
var input = $("#pac-input");
var output = $("#pac-output");
Or, if you prefer the verbose form:
var input = jQuery("#pac-input");
var output = jQuery("#pac-output");
And if you don’t know how to implement jQuery:
<script src="https://code.jquery.com/jquery-3.3.1.js"></script>
<script>
//Your code here...
</script>
solved Google Autosuggest Address change from Javascript to Jquery