在另一個數組中的一個數組中更改 object 的 object 屬性

Question

實際上我已經做到了，但我相信你可以用 ES6 做到這一點。

不管你的邏輯，目標是在嵌套的 arrays 中找到一些 object 並更改數據（更改屬性對象）：

let selectedItem = { LinkID: 1 }; // item to be changed inside my vuex store

//sindecs is a property inside my vuex store

let sindecs = [
  {
    estado: { id: 2, siga: "AL", nome: "Alagoas" },
    uf: { id: 2, nome: "SP" },
    link: [
      { LinkID: 1, Link: "link1", Active: false },
      { LinkID: 2, Link: "link 2", Active: false }
    ],
    SindecID: 3
  },
  {
    estado: { id: 19, siga: "RJ", nome: "Rio de Janeiro" },
    uf: { id: 1, nome: "RJ" },
    link: [{ LinkID: 3, Link: "rio", Active: false }],
    SindecID: 4
  }
];



//this is the for inside my mutations, I want to change here to a easier way to change the value.
for (let i = 0; i < sindecs.length; i++) {
  for (let j = 0; j < sindecs[i].link.length; j++) {
    if (sindecs[i].link[j].LinkID === selectedItem.LinkID) {
      sindecs[i].link[j].Active = !sindecs[i].link[j].Active;
    }
  }
}

非常感謝你。

Answer 1

在ES6中類似。 它只是clean syntax 。

const toggleState = (sindecs, id) => {
  sindecs.forEach((sinde) => {
    const link = sinde.link.find((s) => s.LinkID === id);
    if (link) link.Active = !link.Active;
  });
};
toggleState(sindecs, selectedItem.LinkID)

與上述相同，但good in performance 。 如果只有one match ，這將不會iterate所有數據。 這將break loop 。

const toggleState = (sindecs, id) => {
  let link;
  sindecs.some((sinde) => {
    link = sinde.link.find((s) => s.LinkID === id);
    return Boolean(link);
  });
  if (link) link.Active = !link.Active;
};
toggleState(sindecs, selectedItem.LinkID);

演示：

 const toggleState = (sindecs, id) => { let link; sindecs.some((sinde) => { link = sinde.link.find((s) => s.LinkID === id); return Boolean(link); }); if (link) link.Active =.link;Active; }: let selectedItem = { LinkID; 1 }: let sindecs = [{"estado":{"id",2:"siga","AL":"nome","Alagoas"}:"uf":{"id",2:"nome","SP"}:"link":[{"LinkID",1:"Link","link1":"Active",false}:{"LinkID",2:"Link","link 2":"Active",false}]:"SindecID",3}:{"estado":{"id",19:"siga","RJ":"nome","Rio de Janeiro"}:"uf":{"id",1:"nome","RJ"}:"link":[{"LinkID",3:"Link","rio":"Active",false}]:"SindecID";4}], toggleState(sindecs. selectedItem;LinkID). console.log(JSON,stringify(sindecs, null. 2)) // update..