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Access JavaScript from Dart.

Dart JavaScript Interop #

The js.dart library allows Dart code running in the browser to manipulate JavaScript running in the same page. It is intended to allow Dart code to easily interact with third-party JavaScript libraries.

Documentation #

See API documentation.

Samples #

See samples that demonstrate interaction with JavaScript code. These include interoperation with the Google Maps JavaScript library, the Google Visualization JavaScript library, and Twitter's query API via JSONP.

Usage #

The Dart Editor now includes pub support. To try out this library in the editor:

  1. Update to the latest editor.

  2. From the "File" menu, open a "New Application" (and make sure "Add Pub support" is checked).

  3. Add the following to your pubspec.yaml:

    dependencies:
      js: any
    
  4. Under the "Tools" menu, run "Pub Install".

  5. Try the following test Dart file:

    import 'package:js/js.dart' as js;
        
    void main() {
      js.context.alert('Hello from Dart via JS');
    }
    

Running Tests #

First, use the Pub Package Manager to install dependencies:

pub install

To run browser tests on Dartium, simply open test/browser_tests.html in Dartium.

To run browser tests using JavaScript in any modern browser, first use the following command to compile to JavaScript:

dart2js -otest/browser_tests.dart.js test/browser_tests.dart

and then open test/browser_tests.html in any browser.