Dart JS 互操作 - 将 JS 上下文作为参数传递

Question

如何将上下文从 Dart 传递给 JavaScript？

我正在尝试这个：

JS函数

function foo(this, (arg) {
    console.log(arg);
});

镖

@JS("LibJS")
library libjs;

import 'package:js/js.dart';

@JS("foo")
external dynamic foo(dynamic context, dynamic function);

void main() {
  var obj = foo(context, (arg) {});
}

Answer 1

@JS() // if your JS call isn't LibJS.foo() then remove the string
library libjs;

import 'package:js/js.dart';

@JS() // no need to add the "foo" if the name of the function is foo
external dynamic foo(dynamic context, Function() function);

void main() {
  var obj = foo(context, allowInterop((arg) {
     return 'hello';
  }));
}