Controlling maps

The Felt SDK has a number of methods for interacting with maps, depending on how you set up your HTML.

All Felt maps are embedded in iframes, and the SDK can do this for you or can connect to an existing Felt iframe.

Felt map IDs

Felt map IDs are unique identifiers for Felt maps. They are used to embed maps in iframes, and to connect to existing iframes.

To get the ID of a Felt map, click the Map settings button in the main toolbar, and then you can see the Map ID in the Developers section.

Alternatively, you can look at the URL of the map. For example, the map at https://felt.com/map/Map-title-xPV9BqMuYQxmUraVWy9C89BNA has the ID xPV9BqMuYQxmUraVWy9C89BNA.

Throughout the documentation, we'll use the placeholder FELT_MAP_ID to refer to a Felt map ID.

Using `Felt.embed` to create an iframe

Create an HTML page with a container element:

<html>
  <body>
    <h1>My Felt app</h1>
    <div id="container"></div>
  </body>
</html>

Embed a Felt map in your container element and use the SDK to control it by calling Felt.embed, passing the container element as the first argument:

import { Felt } from "@feltmaps/js-sdk";

const map = await Felt.embed(
  document.querySelector("#container"),
  "FELT_MAP_ID",
);

// Now use the SDK
const layers = await map.getLayers();
const elements = await map.getElements();

// You also have a reference to the iframe itself:
map.iframe.style.width = "50%";

Using `Felt.embed` to mount into an existing iframe

In some cases, you may want to add a "template" iframe to your page. This can be useful if you want to style your iframe in a specific way, or if you already have one map embedded and want to mount and control a different map.

In this case, you can call Felt.embed with the iframe element as the first argument:

<html>
  <body>
    <h1>My Felt app</h1>
    <iframe id="my-iframe"></iframe>
  </body>
</html>

import { Felt } from "@feltmaps/js-sdk";

const map = await Felt.embed(
  document.querySelector("#my-iframe"),
  "FELT_MAP_ID",
);

Using `Felt.connect` to connect to an existing embedded Felt map

There may be cases where you already have a Felt map embedded in an iframe, and you want to control it using the SDK. This can be useful if your HTML is server-rendered with the Felt map already embedded.

In this case, you can call Felt.connect with the iframe's window as the first argument:

<html>
  <body>
    <h1>My Felt app</h1>
    <iframe src="https://felt.com/map/example-map-123" id="my-iframe"></iframe>
  </body>
</html>

import { Felt } from "@feltmaps/js-sdk";

const map = await Felt.connect(
  document.querySelector("#my-iframe").contentWindow
);

Note that in this case, you don't need to pass the Felt map ID to Felt.connect, because we are connecting to a map that has already been embedded.

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Last updated 1 month ago

import { Felt } from "@feltmaps/js-sdk"; const map = await Felt.embed( document.querySelector("#container"), "FELT_MAP_ID", ); // Now use the SDK const layers = await map.getLayers(); const elements = await map.getElements(); // You also have a reference to the iframe itself: map.iframe.style.width = "50%";

Felt map IDs

Using Felt.embed to create an iframe

Using Felt.embed to mount into an existing iframe

Using Felt.connect to connect to an existing embedded Felt map

Felt map IDs

Using Felt.embed to create an iframe

Using Felt.embed to mount into an existing iframe

Using Felt.connect to connect to an existing embedded Felt map

Using `Felt.embed` to create an iframe

Using `Felt.embed` to mount into an existing iframe

Using `Felt.connect` to connect to an existing embedded Felt map

Using `Felt.embed` to create an iframe

Using `Felt.embed` to mount into an existing iframe

Using `Felt.connect` to connect to an existing embedded Felt map