ボタンでレイヤーの色を変更
setPaintProperty を使用してレイヤーの塗りつぶし色を変更します。
<!DOCTYPE html><html><head><meta charset="utf-8"><title>ボタンでレイヤーの色を変更</title><meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no"><link href="https://api.mapbox.com/mapbox-gl-js/v2.14.1/mapbox-gl.css" rel="stylesheet"><script src="https://api.mapbox.com/mapbox-gl-js/v2.14.1/mapbox-gl.js"></script><style>body { margin: 0; padding: 0; }#map { position: absolute; top: 0; bottom: 0; width: 100%; }</style></head><body><style>.map-overlay {font: 12px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif;position: absolute;width: 200px;top: 0;left: 0;padding: 10px;} .map-overlay .map-overlay-inner {background-color: #fff;box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);border-radius: 3px;padding: 10px;margin-bottom: 10px;} .map-overlay-inner fieldset {border: none;padding: 0;margin: 0 0 10px;} .map-overlay-inner fieldset:last-child {margin: 0;} .map-overlay-inner select {width: 100%;} .map-overlay-inner label {display: block;font-weight: bold;margin: 0 0 5px;} .map-overlay-inner button {display: inline-block;width: 36px;height: 20px;border: none;cursor: pointer;} .map-overlay-inner button:focus {outline: none;} .map-overlay-inner button:hover {box-shadow: inset 0 0 0 3px rgba(0, 0, 0, 0.1);}</style> <div id="map"></div><div class="map-overlay top"><div class="map-overlay-inner"><fieldset><label>Select layer</label><select id="layer" name="layer"><!-- Each value matches a layer ID. --><option value="water">Water</option><option value="building">Buildings</option><option value="triangles">Triangles</option></select></fieldset><fieldset><label>Choose a color</label><div id="swatches"></div></fieldset></div></div> <script> // TO MAKE THE MAP APPEAR YOU MUST // ADD YOUR ACCESS TOKEN FROM // https://account.mapbox.com mapboxgl.accessToken = 'YOUR_MAPBOX_ACCESS_TOKEN';const map = new mapboxgl.Map({container: 'map',style: 'mapbox://styles/mapbox/light-v10', // style URL for Mapbox Lightcenter: [12.338, 45.4385],zoom: 18}); map.on('load', () => {// Add a custom layer that uses// a vector tileset source.map.addLayer({id: 'triangles',source: {type: 'vector',url: 'mapbox://examples.ckv9z0wgf5v7c27p7me2mf0l9-9wrve' // custom tileset},'source-layer': 'triangles',type: 'fill'});}); const swatches = document.getElementById('swatches');const layer = document.getElementById('layer');const colors = ['#ffffcc','#a1dab4','#41b6c4','#2c7fb8','#253494','#fed976','#feb24c','#fd8d3c','#f03b20','#bd0026']; for (const color of colors) {const swatch = document.createElement('button');swatch.style.backgroundColor = color;swatch.addEventListener('click', () => {map.setPaintProperty(layer.value, 'fill-color', color);});swatches.appendChild(swatch);}</script> </body></html>