JSFiddle - React, Tailwind, and code Playground

by Tristen Brown

HTML

<link rel="stylesheet" href="https://api.mapbox.com/mapbox-assembly/mbx/v1.2.0/assembly.min.css">
<link rel="stylesheet" href="https://api.mapbox.com/mapbox-gl-js/v3.0.0-rc.2/mapbox-gl.css">
<script src="https://api.mapbox.com/mapbox-gl-js/v3.0.0-rc.2/mapbox-gl.js"></script>
<div id="map" class="absolute top bottom left right w-full"></div>
<div id="toggle" class="btn btn--s mx12 my12 relative z1 cursor-pointer">Update slot</div>

JavaScript

mapboxgl.accessToken = 'pk.eyJ1IjoidHJpc3RlbiIsImEiOiJjajZoOXU4Z2kwNnppMnlxd2d6bTFvZ2xtIn0.PP7AoUakMfeqdXFHdsY0oA';

let toggle = false;

const layer = {
  "id": "landuse",
  "type": "fill",
  "source": "composite",
  "source-layer": "landuse",
  "slot": "top",
  "layout": {},
  "paint": {
    "fill-color": "red"
  }
};

const style = {
  version: 8,
  glyphs: 'mapbox://fonts/mapbox/{fontstack}/{range}.pbf',
  sources: {
    composite: {
      url: 'mapbox://mapbox.mapbox-streets-v8',
      type: 'vector'
    }
  },
  layers: [ layer ],
  imports: [{
    id: 'standard',
    url: 'mapbox://styles/mapbox/standard'
  }]
};

const map = new mapboxgl.Map({
  container: 'map',
  style: style,
  center: [-73.98705, 40.72516],
  zoom: 12
});

document.getElementById('toggle').addEventListener('click', () => {
  if (toggle) {
    map.setStyle(style);
    toggle = false;
  } else {
    map.setStyle({
      ...style,
      layers: [{
      	...layer,
        slot: 'bottom'
      }]
    });
    toggle = true;
  }
});