JSFiddle - React, Tailwind, and code Playground

HTML

<div id="latlng" value="54.9882,-1.5747">

</div>

<div id="test">
    
</div>

JavaScript

var geocoder;

     function initialize() {
      
    geocoder = new google.maps.Geocoder(); 
  }
   
  function codeLatLng() {
      
    var input = document.getElementById("latlng").value; 
    
    var latlngStr = input.split(",",2);
    var lat = parseFloat(latlngStr[0]);
    var lng = parseFloat(latlngStr[1]);
    var latlng = new google.maps.LatLng(lat, lng);
    geocoder.geocode({'latLng': latlng}, function(results, status) {
      
    document.getElementById("test").innerHTML = ''+(results[4].formatted_address);+''
    });
  }