Add a GeoJSON polygon

Style a polygon with the fill layer type. See the example: https://docs.mapbox.com//mapbox-gl-js/example/geojson-polygon/

by Sahil Kashyap

HTML

<script src="https://api.mapbox.com/mapbox-gl-js/v1.11.1/mapbox-gl.js"></script>
<link rel="stylesheet" href="https://api.mapbox.com/mapbox-gl-js/v1.11.1/mapbox-gl.css">

<div id="map"></div>

CSS

body { margin: 0; padding: 0; }
	#map { position: absolute; top: 0; bottom: 0; width: 100%; }

JavaScript

mapboxgl.accessToken = 'pk.eyJ1Ijoic2FoaWxrYXNoeWFwNjQiLCJhIjoiY2tkNDFxYmtoMXQxbjJybXlleGxhejE4MSJ9.LGSnbgHFFcuBE8wXHxIMiA';
    var map = new mapboxgl.Map({
        container: 'map',
        style: 'mapbox://styles/mapbox/streets-v11',
        center: [-68.13734351262877, 45.137451890638886],
        zoom: 5
    });

    map.on('load', function() {
        map.addSource('maine', {
            'type': 'geojson',
            'data': {
                'type': 'Feature',
                'geometry': {
                    'type': 'Polygon',
                    'coordinates': [
                        [
                            [-67.13734351262877, 45.137451890638886],
                            [-66.96466, 44.8097],
                            [-68.03252, 44.3252],
                            [-69.06, 43.98],
                            [-70.11617, 43.68405],
                            [-70.64573401557249, 43.090083319667144],
                            [-70.75102474636725, 43.08003225358635],
                            [-70.79761105007827, 43.21973948828747],
                            [-70.98176001655037, 43.36789581966826],
                            [-70.94416541205806, 43.46633942318431],
                            [-71.08482, 45.3052400000002],
                            [-70.6600225491012, 45.46022288673396],
                            [-70.30495378282376, 45.914794623389355],
                            [-70.00014034695016, 46.69317088478567],
                            [-69.23708614772835, 47.44777598732787],
                            [-68.90478084987546, 47.184794623394396],
                            [-68.23430497910454, 47.35462921812177],
                            [-67.79035274928509, 47.066248887716995],
                            [-67.79141211614706, 45.702585354182816],
                            [-67.13734351262877, 45.137451890638886]
                        ]
                    ]
                }
            }
        });
     ...