Allow a user with an ArcGIS account to sign in with OAuth 2.0. This will grant the application access to owner information.
index.html
<html>
<head>
<meta charset="utf-8" />
<title>Sign in with an ArcGIS account</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>
<!-- Load Esri Leaflet Vector from CDN -->
<script src="https://unpkg.com/esri-leaflet-vector@4.2.3/dist/esri-leaflet-vector.js" crossorigin=""></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">Sign In</a>
</div>
<script>
const accessToken = "YOUR_ACCESS_TOKEN";
const clientID = "YOUR_CLIENT_ID";
let accessToken;
const callbacks = [];
const protocol = window.location.protocol;
const callbackPage = protocol + "./oauth-callback.html";
const authPane = document.getElementById("auth");
const signInButton = document.getElementById("sign-in");
// this function will open a window and start the oauth process
function oauth(callback) {
if (accessToken) {
callback(accessToken);
} else {
callbacks.push(callback);
window.open(
"https://www.arcgis.com/sharing/oauth2/authorize?client_id=" +
clientID +
"&response_type=token&expiration=20160&redirect_uri=" +
window.encodeURIComponent(callbackPage),
"oauth",
"height=400,width=600,menubar=no,location=yes,resizable=yes,scrollbars=yes,status=yes"
);
}
}
// this function will be called when the oauth process is complete
window.oauthCallback = function (token) {
L.esri.get(
"https://www.arcgis.com/sharing/rest/portals/self",
{
token: token
},
function (error, response) {
if (error) {
return;
}
authPane.innerHTML = "<label>Hi " + response.user.username + ' your token is <input value="' + token + '"></label>';
}
);
};
signInButton.addEventListener("click", function (e) {
oauth();
e.preventDefault();
});
// make a new map and basemap
const map = L.map("map").setView([39.36, -96.19], 4);
L.esri.Vector.vectorBasemapLayer("arcgis/light-gray", {
token: accessToken
}).addTo(map);
</script>
</body>
</html>oauth-callback.html
<!DOCTYPE html>
<html>
<head></head>
<body>
<script>
let match;
if (window.location.hash && (match = window.location.hash.match(/#access_token=([^&]+)/))) {
if (window.opener && window.opener.parent) {
window.opener.parent.oauthCallback(match[1]);
} else {
window.parent.oauthCallback(match[1]);
}
window.close();
}
</script>
</body>
</html>