从数组创建多值对象数组

Question

想要得到这个['Team Instinct', 'Team Valor', 'Team Mystic']

到这个

[{
    answer: "Team Instinct",
    id: asdfsodijha120-938a //nanoid()
 },
 {
    answer: "Team Valor",
    id: 12390i1-293-12093a2 //nanoid()
 },
 {
    answer: "Team Mystic",
    id: 123908320i09i09ss8a //nanoid()
 }
]

到目前为止我尝试过的

const { nanoid } = require("nanoid")

const array = ['Team Instinct', 'Team Valor', 'Team Mystic']
let object = {}

obcject = array.reduce((prevValue,currentValue) => {
    prevValue.push({
        answer: currentValue,
        id: nanoid()
    })
},[])

我得到TypeError: Cannot read properties of undefined (reading 'push')的错误

Answer 1

你忘了还prevValue；

 const { nanoid } = require("nanoid")
    
    const array = ['Team Instinct', 'Team Valor', 'Team Mystic']
    let object = {}
    
    obcject = array.reduce((prevValue,currentValue) => {
        prevValue.push({
            answer: currentValue,
            id: nanoid()
        })
        return prevValue
    
    },[])

Answer 2

答案是正确的，你错过了回报。然而，这里有另一种编写它的方法

​

const { nanoid } = require("nanoid")
let object = ['Team Instinct', 'Team Valor', 'Team Mystic'].reduce((prevValue, currentValue) => ([...prevValue, {
  answer: currentValue,
  id: nanoid()
}]), [])

​

Answer 3

当你使用还原剂时，你会在推入减速器后返回它的值。

因此，第一个错误是，您永远不会在回调函数中返回结果。第二个问题是，您试图然后将减(数组)的结果分配给一个对象。

const { nanoid } = require("nanoid");

const array = ['Team Instinct', 'Team Valor', 'Team Mystic'];

const result = array.reduce((prevValue,currentValue) => {
    prevValue.push({
        answer: currentValue,
        id: nanoid()
    });
    return prevValue;
},[]);