Expose Dart functions to javascript

Question

I\'m a bit of a newb to dart, and trying to get my feet wet by writing some library functions in it.

While I\'ve had no problem calling javascript functions from da

Answer 1

No problem ! see Calling Dart from JavaScript.

In your case :

import 'dart:js' as js;
main() {
  String foo() {
    return "bar!";
  }

  js.context['foo'] = foo;
}

Answer 2

In Dart 2.3.0 I had to tweak the solution just a bit for allowInterop to play nice.

    import 'dart:js' as js;
    main() {
      String foo() {
        return "bar!";
      }

      js.context['foo'] = js.allowInterop(foo);
    }

Answer 3

In Dart 1.20 I had to add allowInterop()

import 'dart:js' as js;
main() {
  String foo() {
    return "bar!";
  }

  js.context['foo'] = allowInterop(foo);
}