JavaScript SDK

Build custom experiences for map viewers with the JavaScript SDK.

Felt's user interface allows a large amount of customization, offering the ability to generate complex cartographic designs, adding components to create a dashboard, and much more.

However, sometimes application developers need further control over the experience of viewing and/or interacting with a map. For example, they may want to run custom logic after a user clicks on a feature in a layer, or animate data on the map based on other types of user input elsewhere on the webpage. For these situations and many more, Felt's JavaScript SDK allows developers to load a Felt map into their application while providing opportunities to hook into the interaction loop and more broadly customize the experience of the map viewer.

The SDK also powers Extensions — custom tools that run inside Felt itself, with AI drafting the SDK code for you.

Visit our Developer docs for comprehensive documentation, code examples, and guides to get started.