如何將這種類型的數組轉換為json對象？

Question

我有這個數組：

[ [ '560134275538747403', 39953 ],
  [ '411510958020624384', 36164 ],
  [ '468512396948930576', 31762 ],
  [ '482286641982078977', 29434 ],
  [ '249892869127536641', 6295 ] ]

我想將其隱藏成這樣的對象：

{
"560134275538747403":39953,
"411510958020624384":36164,
"468512396948930576":31762,
"482286641982078977":29434,
"249892869127536641":6295
}

無論如何要這樣做？ 〜和thx

Answer 1

使用Object.fromEntries ：

 const arr=[['560134275538747403',39953],['411510958020624384',36164],['468512396948930576',31762],['482286641982078977',29434],['249892869127536641',6295]]; const res = Object.fromEntries(arr); console.log(res); 

或者，由於未得到廣泛支持，請reduce ：

 const arr=[['560134275538747403',39953],['411510958020624384',36164],['468512396948930576',31762],['482286641982078977',29434],['249892869127536641',6295]]; const res = arr.reduce((a, [k, v]) => (a[k] = v, a), {}); console.log(res); 

Answer 2

您可以使用ES2019功能Object.fromEntries(...) ，

 const array=[ [ '560134275538747403', 39953 ], [ '411510958020624384', 36164 ], [ '468512396948930576', 31762 ], [ '482286641982078977', 29434 ], [ '249892869127536641', 6295 ] ]; const object=Object.fromEntries(array); console.log(object); 

假設Node不支持它。 然后，您可以從npm https://www.npmjs.com/package/object.fromentries安裝它的墊片后才能使用它

這里是一個Runkit鏈接，顯示它的工作使用節點墊片， https://runkit.com/embed/lkupsniraw2c