javascript - 使用标题破坏

Question

我已经用破坏回答了几个问题，我只是想把这个更上一层楼

我想在这个例子中不使用reduce，但如果可能的话，我想纯粹破坏

所以数据的第一行包含对象的属性名称，我怎样才能用它来干燥

即我希望

const obj = data.slice(1).map((titles) => ({ titles }) )

或类似的

所以这行得通，但我又错过了一步:

const data = [
    ["fruits","frozen","fresh","rotten"],
    ["apples",884,494,494],
    ["oranges",4848,494,4949],
    ["kiwi",848,33,33]
]
const titles = data[0]; // not used below but I want to use it
const obj = data.slice(1).map(([fruits,frozen,fresh,rotten]) => ({ fruits,frozen,fresh,rotten }) )
console.log(obj)

Answer 1

您可以映射对象的条目。

const
    data = [["fruits", "frozen", "fresh", "rotten"], ["apples", 884, 494, 494], ["oranges", 4848, 494, 4949], ["kiwi", 848, 33, 33]],
    mapWith = keys => values => Object.fromEntries(keys.map((k, i) => [k, values[i]])),
    getArray = ([keys, ...data]) => data.map(mapWith(keys)),
    array = getArray(data);

console.log(array);

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旧的更简单的例子

const data = [
  ["fruits", "frozen", "fresh", "rotten"],
  ["apples", 884, 494, 494],
  ["oranges", 4848, 494, 4949],
  ["kiwi", 848, 33, 33]
]
const titles = data[0];

const obj = data.slice(1).map(
  arr => Object.fromEntries(
    titles.map( 
      (t, i) => [t, arr[i]] 
    )
  )
);

console.log(obj);

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