Dart provides several packages and libraries to support web app development, the recommended option being package:web. The Dart SDK also contains other libraries that provide low-level web APIs.

Migrate to package:web : Learn how to migrate to package:web from Dart's previous web library solutions, like dart:html.

package:web API reference : Dart's recommended web interop solution package:web exposes browser APIs with lightweight bindings built around static JS interop.

JavaScript interoperability documentation : Learn how to interact with existing JavaScript or TypeScript libraries using Dart's JS interop support.

dart:js_interop API reference : Dart's web library dart:js_interop provides all the necessary members to facilitate sound interop between JavaScript and Dart types.

Flutter web support : The Flutter framework supports web development with Dart, in addition to mobile, desktop, and embedded device support.

Build a web app with Dart : A quick overview of how to build, run, and debug a web app with Dart.

To find other libraries that support the web platform, search pub.dev for web packages.