You can access premium and curated content hosted by Esri by authenticating with OAuth credentials.
<html>
<head>
<meta charset="utf-8" />
<title>Access premium content</title>
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no" />
<!-- Load CSS-->
<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>
<!-- Load Esri Leaflet Vector from CDN -->
<script src="https://unpkg.com/esri-leaflet-vector@4.2.5/dist/esri-leaflet-vector.js" crossorigin=""></script>
<script>
const apiKey = "YOUR_ACCESS_TOKEN";
</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>
<style>
#auth {
position: absolute;
top: 10px;
right: 10px;
z-index: 1000;
background: white;
padding: 1em;
box-shadow: 0 1px 5px rgba(0, 0, 0, 0.65);
border-radius: 4px;
}
#auth input {
display: inline-block;
border: 1px solid #999;
font-size: 14px;
border-radius: 4px;
height: 28px;
line-height: 28px;
}
</style>
<div id="map"></div>
<div id="auth">
<a href="#" id="sign-in">Add Traffic Layer</a>
</div>
<script type="module">
import { ArcGISIdentityManager } from "https://esm.run/@esri/arcgis-rest-request@4";
const clientID = "KFC3PHhZDSVXDKSC";
let accessToken;
const callbacks = [];
const w = parent.document.URL.split("/");
const callbackPage = `${w[0]}//${w[2]}/esri-leaflet/oauth/callback.html`;
const signInButton = document.getElementById("sign-in");
let trafficLayer;
const map = L.map("map").setView([34.045, -118.195], 13);
L.esri.Vector.vectorBasemapLayer("arcgis/streets-night", {
apikey: apiKey
}).addTo(map);
const getAuth = () => {
return ArcGISIdentityManager.beginOAuth2({
clientId: clientID,
redirectUri: callbackPage
});
};
signInButton.addEventListener("click", (e) => {
getAuth().then((idManager) => {
accessToken = idManager.token;
trafficLayer = L.esri
.dynamicMapLayer({
url: "https://traffic.arcgis.com/arcgis/rest/services/World/Traffic/MapServer",
token: accessToken
})
.addTo(map);
trafficLayer.on("authenticationrequired", (e) => {
getAuth().then((idManager) => {
e.authenticate = idManager.token;
});
});
});
e.preventDefault();
});
</script>
</body>
</html>