Question

   data = {
{'uid': 12, 'amount': 100},
{'uid': 23, 'amount': 250}
}
object = {12:{'name':'Paul', 'id':12}, 20:{'name':'Mike', 'id':20}, 41:{'name':'Jack', 'id':41}, 23:{'name':'Luke', 'id':23}}

预期输出是

const result = {{'name':'Paul', 'id': 12, 'amount':100}, {'name':'Luke', 'id': 12, 'amount': 250}}

我尝试映射uid以获取和值数组，如

uids = [12, 23]

然后

        names = uids.map(key => object[key].name);

这样我就可以用它们来映射另一个对象中的键和名称，但无法弄清楚我知道这是基本的javascript，但我是新手

Answer 1

您可以简单地使用给定的键映射对象。

var array = [12, 23],
    object = { 12: { name: 'Paul', id: 12 }, 20: { name: 'Mike', id: 20 }, 41: { name: 'Jack', id: 41 }, 23: { name: 'Luke', id: 23 } },
    result = array.map(key => object[key]);

console.log(result);

Answer 2

var data = {
{'uid': 12, 'amount': 100},
{'uid': 23, 'amount': 250}
};

var object = {12:{'name':'Paul', 'id':12}, 20:{'name':'Mike', 'id':20}, 41:{'name':'Jack', 'id':41}, 23:{'name':'Luke', 'id':23}};

var uids = [12, 23];

    mappedValues = uids.map(key => object[key]);

 var result = mappedValues.map((item, i) => Object.assign({}, item, data[i]));
console.log(result);

Answer 3

首先data的结构是错误的。它应该是一个数组。然后，您可以这样做：

   data = [
{'uid': 12, 'amount': 100},
{'uid': 23, 'amount': 250}
];


object = {12:{'name':'Paul', 'id':12}, 20:{'name':'Mike', 'id':20}, 41:{'name':'Jack', 'id':41}, 23:{'name':'Luke', 'id':23}};

for(let key in object){
  var match = data.filter(i=>i.uid.toString() === key);
  if(match && match.length){
    object[key].amount = match[0].amount;
  }
}
console.log(object)

如何基于另一个对象数组的值获取一个对象数组键的值？

3 个答案: