JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://google-maps-utility-library-v3.googlecode.com/svn/tags/markerclusterer/1.0/src/markerclusterer_compiled.js"></script>
<body>
<div id="map_canvas" style="height:800px; width:700px;"></div>
    <script src="http://maps.google.com/maps/api/js?sensor=false"></script>
</body>

JavaScript

var response = [
    {
        "longititude": "78.377665",
        "latitude": "17.439669",
        "name": "one"
    },
      {
        "longititude": "78.377665",
        "latitude": "17.439667",
       "name": "four"
    }
]

initializeCalllater(18.1124372, 79.01929969999999, response);


function initializeCalllater(lator, lonor, response) {
    geocoder = new google.maps.Geocoder();
    var latlng = new google.maps.LatLng(lator, lonor);
    var myOptions = {
        zoom: 17,
        center: latlng,
        mapTypeId: google.maps.MapTypeId.ROADMAP,
        mapTypeControl: false,
        zoomControlOptions: {
            style: google.maps.ZoomControlStyle.LARGE
        },
    }
    map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
    google.maps.event.trigger(map, 'resize');
    map.setCenter(new google.maps.LatLng(lator, lonor));
    var infowindow = new google.maps.InfoWindow({});
  
    addMarker(response, lator, lonor, infowindow);
}

function addMarker(response, lator, lonor, infowindow) {
    if (response.length > 0) {
        var bounds = new google.maps.LatLngBounds();
        var global_markers = [];
        for (var i = 0; i < response.length; i++) {
             var lat = parseFloat(response[i].latitude);
            var lng = parseFloat(response[i].longititude);
            var check = checkifgotsameLatitude(response,lat,lng, i + 1);
            if(check>=2)
            {
                lat = lat+0.222;
            }
            var dealername = response[i].name;
                var marker = new google.maps.Marker({
                    position: new google.maps.LatLng(lat, lng),
                    map: map,
                    title: "Dealer name: " + lat,
                    icon: 'http://maps.google.com/mapfiles/marker.png'
                });
            bounds.extend(marker.getPosition());
                global_markers[i] = marker;

                google.maps.event.addListener(map, 'click', function() {
       ...