js-interop：从dart传递javascript对象 [英] js-interop: Passing javascript object from dart

问题描述

我正在努力将javascript移植到dart。

I'm struggling to port javascript to dart..

我的问题是如何创建javascript对象。
原始的javascript代码是

My problem is how to create javascript object. original javascript code is

  function Beagle() {
    this.argv_ = null;
    this.io = null;
  };
  Beagle.prototype.run = function() {
    this.io = this.argv_.io.push();
  };

现在我有 Beagle 并且它应该 context ['Beagle'] 也许？

Now I have Beagle object. and it should be context['Beagle'] maybe?

如何创建javascript obejct？和原型？

how can I create javascript obejct?? and with prototype?

推荐答案

c> Beagle 应在 context ['Beagle'] 上可用。要从Dart创建一个新的实例，你需要使用 JsObject 构造函数：

You are correct that Beagle should be available at context['Beagle']. To create a new instance from Dart you need to use the JsObject constructor:

var beagle = new JsObject(context['Beagle']);

一旦你这样做，你可以调用 run 与 callMethod 方法：

Once you do that you can call run with the callMethod method:

beagle.callMethod('run');

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