Javascript reducer状态更改后缺少嵌套对象

我正试图在我的状态下更新

selectedAnswer

：

case "SET_ANSWER": {
  const { selectedAnswer, id } = action.data;

  return {
    videos: state.videos.map(video =>
      video.id === id ? { ...video, selectedAnswer } : video
    ),
    search: { term: "", videos: [] }
  };
}

我的原始状态如下所示：

videos: [{
bookMarked: false
completed: false
current: 0
description: "ffff"
icon: "administrating-vaccinations"
id: 138
parentId: ""
preview: "ddd"
questions: [{…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}]
recapId: "374"
results: {correctAnswers: Array(0), incorrectAnswers: Array(0), totalScore: 0}
selectedAnswer: ""
title: "ddd"
youtubeVideo: "ddd"
}...]

但是，在我的reducer更新状态后，我得到了未定义的

结果

：

...
questions: (10) [{…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}, {…}]
recapId: "374"
results: undefined <<<<<<
selectedAnswer: ""
title: "Administering Vaccinations"
youtubeVideo: "P2ZSmFDODG4"

---

spread运营商不做深度克隆，你必须做

videos: state.videos.map(video =>
      video.id === id ? { ...video, results: {...video.results}, selectedAnswer } : video
    ),

---

你的答案是，不要告诉我你的问题。你能创建沙盒吗也许你应该从map方法返回，-也许你有typeo

videos: state.videos.map(video =>
      video.id === id ? { ...video, results: {...video.results}, selectedAnswer } : video
    ),