javascript - 将嵌套对象的每个对象的索引设置为属性

Question

早上好!

有谁知道如何将嵌套对象的每个对象的索引插入到属性中？

是这样的:

const myObj = 
{
  "@type": "someType",
  A: [
    {
      "@type": "someType0",
      order: "DESC",
      myIndex: 0
    },
    {
      "@type": "someType1",
      order: "DESC",
      myIndex: 1
    },
    {
      "@type": "someType2",
      order: "DESC",
      myIndex: 2
    }
  ],
  B: [],
};

Answer 1

您可以使用递归方法并为所有数组添加一个索引。

function setIndex(object) {
    Object.values(object).forEach(v => {
        if (Array.isArray(v)) {
            v.forEach((o, i) => {
                o.index = i;
                setIndex(o);
            });
        }
    });
}

const object = { "@type": "someType", A: [{ "@type": "someType0", order: "DESC" }, { "@type": "someType1", order: "DESC" }, { "@type": "someType2", order: "DESC" }], B: [] };

setIndex(object);

console.log(object);

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