You can display a web map hosted in ArcGIS using the L.esri.Web plugin.
<html>
<head>
<meta charset="utf-8" />
<title>Display a web map</title>
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no" />
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" crossorigin="" />
<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js" crossorigin=""></script>
<!-- Load Esri Leaflet from CDN -->
<script src="https://unpkg.com/esri-leaflet@3.0.12/dist/esri-leaflet.js"></script>
<style>
html,
body,
#map {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
font-family: Arial, Helvetica, sans-serif;
font-size: 14px;
color: #323232;
}
</style>
</head>
<body>
<!-- Load Leaflet Label from GitHub -->
<script src="https://leaflet.github.io/Leaflet.label/leaflet.label.js"></script>
<!-- Include Leaflet.heat from CDN -->
<script src="https://unpkg.com/leaflet.heat@0.2.0/dist/leaflet-heat.js"></script>
<!-- Load Heatmap Feature Layer from CDN -->
<script src="https://cdn.jsdelivr.net/leaflet.esri.heatmap-feature-layer/2.0.0-beta.1/esri-leaflet-heatmap-feature-layer.js"></script>
<!-- Load Esri Leaflet Renderers from CDN -->
<script src="https://cdn.jsdelivr.net/leaflet.esri.renderers/2.0.2/esri-leaflet-renderers.js"></script>
<!-- Load Vector Icon from GitHub -->
<script src="https://muxlab.github.io/Leaflet.VectorIcon/L.VectorIcon.js"></script>
<!-- Load Leaflet Omnivore -->
<script src="https://api.tiles.mapbox.com/mapbox.js/plugins/leaflet-omnivore/v0.3.1/leaflet-omnivore.min.js"></script>
<!-- Load L.esri.WebMap -->
<script src="https://cdn.jsdelivr.net/leaflet.esri.webmap/0.4.0/esri-leaflet-webmap.js"></script>
<div id="map"></div>
<script>
const apiKey = "YOUR_API_KEY";
const webmapId = "d143b33f1a02421d86b6a4ca1d7b7cd0"; // Default WebMap ID
getIdfromUrl();
const webmap = L.esri.webMap(webmapId, { map: L.map("map") });
webmap.on("load", function () {
const overlayMaps = {};
webmap.layers.forEach(function (l) {
overlayMaps[l.title] = l.layer;
});
L.control
.layers({}, overlayMaps, {
position: "bottomleft"
})
.addTo(webmap._map);
});
function getIdfromUrl() {
const urlParams = location.search.substring(1).split("&");
for (let i = 0; urlParams[i]; i++) {
const param = urlParams[i].split("=");
if (param[0] === "id") {
webmapId = param[1];
}
}
}
</script>
</body>
</html>