Question

我试图找到使用immutableJs迭代所有键的更好方法。（基本上，我想立即更新地图中的所有值。）通过更改tdata.setIn（[tdata.keySeq（），“comments”]，value =＆gt;“new Comment”）来尝试; setIn，UpdateIn - Immutable中的深度持久更改方法

let data = [
  {
    id: "1",
    isSelected: false,
    isStarred: false,
    comments: “comments”,
    title: “Title1”,
    userName: “uName”
  },
  {
    id: "2",
    isSelected: false,
    isStarred: false,
   comments: “comments”,
       title: “Title1”,
    userName: “uName”
  },
  {
    id: "3",
    isSelected: false,
    isStarred: false,
    comments: “comments”,
    title: “Title1”,
    userName: “uName”
  },
  {
    id: "4",
    isSelected: false,
    isStarred: false,
    comments: “comments”,
    title: “Title1”,
    userName: “uName”
  },
  {
    id: "5",
    isSelected: false,
    isStarred: false,
    comments: “comments”,
    title: “Title1”,
    userName: “uName”
  }
]

let tData = OrderedMap();
   for (let i = 0; i < data.length; i++) {
   let values = Map(data[i]);
   tData = tData.set(data[i].id, values);

}

tdata.updateIn([“2”, "comments"], value =>”new Comment”);

我没有明确指定key =“2”，而是希望更新整个Map 谢谢你的帮助

Answer 1

听起来你想使用map功能。

const data = fromJS({
  a: {comment: "1"},
  b: { comment: "2"},
  c: {count: "3"}
);
const newData = data.map((key, value) => {
  if (value.get("comment") == "2")
    return value.set("comment", "new comment")
  else
    return value
});

使用immutableJs更新OrderMap中具有特定值的所有键

1 个答案: