Learn how to display feature attributes in a pop-up .
A pop-up , also known as a "popup", is a visual element that displays information about a feature when it is clicked. You typically style and configure a pop-up using HTML and CSS for each layer in a map. Pop-ups can display attribute values, calculated values, or rich content such as images, charts, or videos.
In this tutorial, you create an interactive pop-up for the Trailheads feature layer in the Santa Monica Mountains. When a feature is clicked, a pop-up is displayed containing the name of the trail and the service that manages it.
Prerequisites You need an ArcGIS account to access the developer dashboard and create an API key .
Steps Create a new pen To get started, either complete the Display a map tutorial or use this pen . Set the API key To access location services , you need an API key or OAuth 2.0 access token . To learn how to create and scope your key, visit the Create an API key tutorial.
Go to your dashboard to get an API key. The API key must be scoped to access the services used in this tutorial.
In CodePen , update apiKey to use your key.
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<!DOCTYPE html >
< html >
< head >
< meta charset = "utf-8" />
< meta name = "viewport" content = "initial-scale=1,maximum-scale=1,user-scalable=no" />
< title > Esri Leaflet </ title >
<!-- Load Leaflet from CDN -->
< link rel = "stylesheet" href = "https://unpkg.com/leaflet@1.8.0/dist/leaflet.css" crossorigin = "" />
< script src = "https://unpkg.com/leaflet@1.8.0/dist/leaflet.js" crossorigin = "" > </ script >
<!-- Load Esri Leaflet from CDN -->
< script src = "https://unpkg.com/esri-leaflet@^3.0.8/dist/esri-leaflet.js" > </ script >
< script src = "https://unpkg.com/esri-leaflet-vector@^3.0.0/dist/esri-leaflet-vector.js" > </ script >
< style >
body {
margin : 0 ;
padding : 0 ;
}
#map {
position : absolute;
top : 0 ;
bottom : 0 ;
right : 0 ;
left : 0 ;
font-family : Arial, Helvetica, sans-serif;
font-size : 14px ;
color : #323232 ;
}
</ style >
</ head >
< body >
< div id = "map" > </ div >
< script >
const apiKey = "YOUR_API_KEY" ;
const basemapEnum = "ArcGIS:Streets" ;
const map = L.map( "map" , {
minZoom : 2
}).setView([ 34.02 , - 118.805 ], 13 );
L.esri.Vector.vectorBasemapLayer(basemapEnum, {
apiKey : apiKey
}).addTo(map);
</ script >
</ body >
</ html >
Show a pop-up Add the following code to add a feature layer to the map and setup a pop-up for the Trailheads layer.
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<!DOCTYPE html >
< html >
< head >
< meta charset = "utf-8" />
< meta name = "viewport" content = "initial-scale=1,maximum-scale=1,user-scalable=no" />
< title > Esri Leaflet </ title >
<!-- Load Leaflet from CDN -->
< link rel = "stylesheet" href = "https://unpkg.com/leaflet@1.8.0/dist/leaflet.css" crossorigin = "" />
< script src = "https://unpkg.com/leaflet@1.8.0/dist/leaflet.js" crossorigin = "" > </ script >
<!-- Load Esri Leaflet from CDN -->
< script src = "https://unpkg.com/esri-leaflet@^3.0.8/dist/esri-leaflet.js" > </ script >
< script src = "https://unpkg.com/esri-leaflet-vector@^3.0.0/dist/esri-leaflet-vector.js" > </ script >
< style >
body {
margin : 0 ;
padding : 0 ;
}
#map {
position : absolute;
top : 0 ;
bottom : 0 ;
right : 0 ;
left : 0 ;
font-family : Arial, Helvetica, sans-serif;
font-size : 14px ;
color : #323232 ;
}
</ style >
</ head >
< body >
< div id = "map" > </ div >
< script >
const apiKey = "YOUR_API_KEY" ;
const basemapEnum = "ArcGIS:Streets" ;
const map = L.map( "map" , {
minZoom : 2
}).setView([ 34.02 , - 118.805 ], 13 );
L.esri.Vector.vectorBasemapLayer(basemapEnum, {
apiKey : apiKey
}).addTo(map);
// Add the Feature Layer to the map
var trailheads = L.esri
.featureLayer({
url : "https://services3.arcgis.com/GVgbJbqm8hXASVYi/arcgis/rest/services/Trailheads_Styled/FeatureServer/0"
})
.addTo(map);
// Setup the Popup
trailheads.bindPopup( function ( layer ) {
return L.Util.template( "<b>{TRL_NAME}</b><br>{PARK_NAME}</br>" , layer.feature.properties);
});
</ script >
</ body >
</ html >
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Run the app In CodePen , run your code to display the map.
The map view should display the Trailheads feature layer . When you click a feature, the name of the trailhead and its park name is displayed in a pop-up.
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