如何在JavaScript中把对象{}转换为键值对的数组[]？

我想转换一个这样的对象。

{"1":5,"2":7,"3":0,"4":0,"5":0,"6":0,"7":0,"8":0,"9":0,"10":0,"11":0,"12":0}

转换成一个键值对的数组，像这样。

[[1,5],[2,7],[3,0],[4,0]...].

如何在JavaScript中把一个对象转换成键值对数组？

编程
arrays javascript type-conversion
8日 八月 2016 в 8:21
24 种观点
解决办法

你可以使用Object.keys()和map()来完成这个任务

var obj = {"1":5,"2":7,"3":0,"4":0,"5":0,"6":0,"7":0,"8":0,"9":0,"10":0,"11":0,"12":0}
var result = Object.keys(obj).map(function(key) {
  return [Number(key), obj[key]];
});

console.log(result);
Christophe Roussy
编辑本段答案25日 七月 2017 в 1:03
评论(2)

使用Object.keys和Array#map方法。

var obj = {
  "1": 5,
  "2": 7,
  "3": 0,
  "4": 0,
  "5": 0,
  "6": 0,
  "7": 0,
  "8": 0,
  "9": 0,
  "10": 0,
  "11": 0,
  "12": 0
};
// get all object property names
var res = Object.keys(obj)
  // iterate over them and generate the array
  .map(function(k) {
    // generate the array element 
    return [+k, obj[k]];
  });

console.log(res);
评论(0)

在Ecmascript 6,

var obj = {"1":5,"2":7,"3":0,"4":0,"5":0,"6":0,"7":0,"8":0,"9":0,"10":0,"11":0,"12":0};

var res = Object.entries(obj);

console.log(res);

[fiddle][1]

Nageshwar Reddy
编辑本段答案9日 二月 2019 в 5:06
评论(2)