如何根据另一个对象数组的值获取一个对象数组键的值？

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}}

the output expected is

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

I tried mapping the uids to get and array of values like

uids = [12, 23]

then

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

so that I could use them to map the keys and the names in the other object but couldn't figure it out I know it is basic javascript but I am new to this

Answer 1

You could simply map the object with the given keys.

 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

First of all the structure of data is wrong. It should be an array. Then you could do this:

 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)