您可以这样做以获得js中的响应。
假设你有一个触发加速的表单：submit-end

<%= form_with(url: some_path, data: {  action: 'turbo:submit-end->some-js-controller#someActionMethod' }) do |f| %>

现在，要得到响应，您必须执行以下操作：

someActionMethod(event) {
    event.detail.fetchResponse.response.text().then(value => {
      //value contains the response, if response is html, if response is 
      //json, event.detail.fetchResponse.response.json() (did not try, 
      //should work)
    })
  }