Display a map component

Learn how to create and display a map with a legend using map components.

A web map is a map stored as an item in ArcGIS Online. A web map item contains all of the configuration settings for the map (in JSON format) such as the basemap layer, data layers, layer styles, and pop-up settings. Applications can access and display a web map using its item ID.

In this tutorial, you will load and display a pre-configured web map stored in ArcGIS Online.

Steps

Create a new pen

Go to CodePen to create a new pen for your mapping application.

Add basic HTML

Define a basic HTML page.

In CodePen > HTML, add HTML to create a basic page.

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<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no" />
  <title>ArcGIS Maps SDK for JavaScript Tutorials: Display a map using arcgis/map-components</title>

  <style>
    html,
    body{
      padding: 0;
      margin: 0;
      height: 100%;
      width: 100%;
    }
  </style>

</head>

<body>

</body>

</html>

Add references

In the <head> tag, add references to the ArcGIS core library and CSS, and @arcgis/map-components packages.

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  <style>
    html,
    body{
      padding: 0;
      margin: 0;
      height: 100%;
      width: 100%;
    }
  </style>

  <!-- Load Map Components from CDN-->
  <link rel="stylesheet" href="https://js.arcgis.com/4.30/esri/themes/light/main.css">
  <script src="https://js.arcgis.com/4.30/"></script>
  <script type="module" src="https://js.arcgis.com/map-components/4.30/arcgis-map-components.esm.js"></script>
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Add map component

In the <body> tag, add the <arcgis-map> component and specify the webmap item ID.

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<body>

  <arcgis-map item-id="05e015c5f0314db9a487a9b46cb37eca">

  </arcgis-map>

</body>
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Component reference (map)

Add legend component

Inside the <arcgis-map> component, add the <arcgis-legend> component and specify its position.

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<body>

  <arcgis-map item-id="05e015c5f0314db9a487a9b46cb37eca">

    <arcgis-legend position="bottom-right"></arcgis-legend>

  </arcgis-map>

</body>
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Component reference (legend)

Run the app

In CodePen, run your code to display the map.

The app should display a map showing predominant educational attainment in New York, with a legend in the bottom-right corner.

What's next?

Learn how to use additional SDK functionality:

Using a View with components tutorial.
Go to the component reference for more detailed information about components.