Change a Layer's Color with Buttons
Change the color of a map layer dynamically using buttons.
const API_KEY = 'toursprung';
const map = new maptoolkit.Map({
container: 'map',
style: `https://static.maptoolkit.net/styles/toursprung/terrain.json?api_key=${API_KEY}`,
center: [13.405, 52.52],
zoom: 14,
attributionControl: { compact: false }
});
const swatches = document.getElementById('swatches');
const layer = document.getElementById('layer');
const colors = [
'#ffffcc', '#a1dab4', '#41b6c4', '#2c7fb8', '#253494',
'#fed976', '#feb24c', '#fd8d3c', '#f03b20', '#bd0026'
];
colors.forEach((color) => {
const swatch = document.createElement('button');
swatch.style.backgroundColor = color;
swatch.addEventListener('click', () => {
map.setPaintProperty(layer.value, 'fill-color', color);
});
swatches.appendChild(swatch);
});<!DOCTYPE html>
<html lang="en">
<head>
<title>Change a Layer's Color with Buttons – Maptoolkit Maps JS</title>
<meta property="og:description" content="Change the color of a map layer dynamically using buttons." />
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="https://unpkg.com/@maptoolkit/maps@11.0.0-beta.2/dist/maptoolkit.js"></script>
<link rel="stylesheet" href="https://unpkg.com/@maptoolkit/maps@11.0.0-beta.2/dist/maptoolkit.css" />
<style>
html, body { width: 100%; height: 100%; margin: 0; padding: 0; }
#map { width: 100%; height: 100%; }
.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>
</head>
<body>
<div id="map"></div>
<div class="map-overlay top">
<div class="map-overlay-inner">
<fieldset>
<label for="layer">Select layer</label>
<select id="layer" name="layer">
<option value="water">Water</option>
<option value="building">Buildings</option>
</select>
</fieldset>
<fieldset>
<label>Choose a color</label>
<div id="swatches"></div>
</fieldset>
</div>
</div>
<script>
const API_KEY = 'toursprung';
const map = new maptoolkit.Map({
container: 'map',
style: `https://static.maptoolkit.net/styles/toursprung/terrain.json?api_key=${API_KEY}`,
center: [13.405, 52.52],
zoom: 14,
attributionControl: { compact: false }
});
const swatches = document.getElementById('swatches');
const layer = document.getElementById('layer');
const colors = [
'#ffffcc', '#a1dab4', '#41b6c4', '#2c7fb8', '#253494',
'#fed976', '#feb24c', '#fd8d3c', '#f03b20', '#bd0026'
];
colors.forEach((color) => {
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>