D3 Examples - 3 layers mapbox

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<!DOCTYPE html>
<html>
<head>
    <meta charset='utf-8' />
    <title>Show and hide layers</title>
    <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
    <script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.44.1/mapbox-gl.js'></script>
    <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.44.1/mapbox-gl.css' rel='stylesheet' />
    <style>
        body { margin:0; padding:0; }
        #map { position:absolute; top:0; bottom:0; width:100%; }
    </style>
</head>
<body>
​
<style>
    #menu {
        background: #fff;
        position: absolute;
        z-index: 1;
        top: 10px;
        right: 10px;
        border-radius: 3px;
        width: 120px;
        border: 1px solid rgba(0,0,0,0.4);
        font-family: 'Open Sans', sans-serif;
    }
​
    #menu a {
        font-size: 13px;
        color: #404040;
        display: block;
        margin: 0;
        padding: 0;
        padding: 10px;
        text-decoration: none;
        border-bottom: 1px solid rgba(0,0,0,0.25);
        text-align: center;
    }
​
    #menu a:last-child {
        border: none;
    }
​
    #menu a:hover {
        background-color: #f8f8f8;
        color: #404040;
    }
​
    #menu a.active {
        background-color: #3887be;
        color: #ffffff;
    }
​
    #menu a.active:hover {
        background: #3074a4;
    }
</style>
​
<nav id="menu"></nav>
<div id="map"></div>
​
<script>
mapboxgl.accessToken = 'pk.eyJ1IjoiYW5keS1ydXRrb3dza2kiLCJhIjoiWDJRMFVUWSJ9.iHl6Cf0M79wmHQlfP6Bk8Q';
var map = new mapboxgl.Map({
    container: 'map',
    style: 'mapbox://styles/andy-rutkowski/cjmgv4x1s71qo2rmpu9plnjx2',
    zoom: 10,
    center: [-118.230534602645, 33.917379300798098]
});
map.on('load', function () {
    map.addSource('1939HOLC_CentralLA-2esjxw', {
        type: 'raster',
        url: 'mapbox://andy-rutkowski.a0p1p0hr'
    });
    map.addLayer({
        'id': 'HOLC',
        'type': 'raster',
        'source': '1939HOLC_CentralLA-2esjxw',
        'layout': {
            'visibility': 'visible'
        },
        
        'source-layer': '1939HOLC_CentralLA-2esjxw'
​
    });
   });
  map.on('load', function () {
    map.addSource('39GreenBook-71q26f', {
        type: 'vector',
        url: 'mapbox://andy-rutkowski.4g09jqj8'
    });
    map.addLayer({
        'id': '39GreenBook',
        'type': 'circle',
        'source': '39GreenBook-71q26f',
        'layout': {
            'visibility': 'visible'
        },
        'paint': {
            'circle-radius': 5,
            'circle-color': 'rgba(55,148,179,1)'
        },
        'source-layer': '39GreenBook-71q26f'
  
    });
 });
var toggleableLayerIds = [ '39GreenBook','HOLC'];
​
for (var i = 0; i < toggleableLayerIds.length; i++) {
    var id = toggleableLayerIds[i];
​
    var link = document.createElement('a');
    link.href = '#';
    link.className = 'active';
    link.textContent = id;
​
    link.onclick = function (e) {
        var clickedLayer = this.textContent;
        e.preventDefault();
        e.stopPropagation();
​
        var visibility = map.getLayoutProperty(clickedLayer, 'visibility');
​
        if (visibility === 'visible') {
            map.setLayoutProperty(clickedLayer, 'visibility', 'none');
            this.className = '';
        } else {
            this.className = 'active';
            map.setLayoutProperty(clickedLayer, 'visibility', 'visible');
        }
    };
​
    var layers = document.getElementById('menu');
    layers.appendChild(link);
  }
​
</script>
​
</body>
</html>
​
    