javascript - 在数据结构中选择对象

Question

如何使用以下对象中的动物/重量键/值对创建一个新对象？

{
    "Pigs": {
        "Weight": 6.2,
        "Price": 1.6
    },
    "Chicken": {
        "Weight": 5.8,
        "Price": 0.9
    },
  ...

Answer 1

试试这个:

 var a={ "Pigs": { "Weight": 6.2, "Price": 1.6 }, "Chicken": { "Weight": 5.8, "Price": 0.9 }}
 var g={};

 for (var o in a)
  {
    g[o]=a[o].Weight;
  }

 console.log(g) //Object {Pigs: 6.2, Chicken: 5.8}