使用數組中的鍵值對創建 object

Question

有這個輸入數組：

const myArray = [{value: "test"}, {value: "abc"}, {value: "xyz"}];

期望的結果是這樣的： result = { "value1": "test", "value2": "abc", "value3": "xyz" };

我試過這樣做，但它返回一個空的 object: {undefined: ""}

const result = myArray.reduce((agg, item) => {
  agg[item.key] = item.value;
  return agg;
}, {})

有任何想法嗎？

Answer 1

您可以使用Object.keys讀取鍵的名稱，並使用array.reduce的第三個參數獲取當前處理的項目的索引。

 const myArray = [{value: "test"}, {value: "abc"}, {value: "xyz"}]; //the desired result is this: result = { "value1": "test", "value2": "abc", "value3": "xyz" }; const result = myArray.reduce((agg, item, index) => { agg[Object.keys(item)[0] + (index + 1)] = item.value; return agg; }, {}) console.log(result);

Answer 2

你可以試試，

 const myArray = [{value: "test"}, {value: "abc"}, {value: "xyz"}]; const result = myArray.reduce((agg, item, index) => { // append the array index to the key "value" agg[Object.keys(item)[0] + (index + 1)] = item[Object.keys(item)[0]]; return agg; }, {}); console.log(result);

上面的代碼會將值動態分配給“對象”的新索引鍵