我如何创建一个函数来更改位于数组内的对象内的属性，在 JSON 中

Question

so ive been currently stuck on a JavaScript assignment for hours now.

so ive been given a Json file with the following data :

{
    "owner": "Jun31d",
    "info": [{ "id": 1, "name": "bob", "flavour": "vanilla", "age": 43 },
             { "id": 2, "name": "Juneid", "flavour": "Chocolate", "age": 19 },
             { "id": 3, "name": "Patrick", "flavour": "Strawberry", "age": 25 },
             { "id": 4, "name": "Jean", "flavour": "Mint", "age": 31 },
             { "id": 5, "name": "Ahmad", "flavour": "vanilla", "age": 18 },
             { "id": 6, "name": "Ali", "flavour": "Bubblegum", "age": 19 },
             { "id": 7, "name": "Frank", "flavour": "Pistachio", "age": 23 }
            ]
}

The instruction for my assigment is the following :

Instruction

So from what ive understood i need to create a function that holds two string parameters, And ill need to change the property inside of my object that is located in an array to a new property.

And until now heres what i did :

'use strict'

const iceCream = require('./main.json')

let namespace = {

    changeProp : function (newprop,oldprop) {
        for (let oldprop in iceCream.info) {
           
        }
    }


}

I know it is not much at all, but i just want some help to know how can i move forward a little bit more on my assigment.

Any help is appreciated, thank you

Answer 1

You can easily replace the oldKey with newKey using map , Object.keys , and reduce

 const data = { owner: "Jun31d", info: [ { id: 1, name: "bob", flavour: "vanilla", age: 43 }, { id: 2, name: "Juneid", flavour: "Chocolate", age: 19 }, { id: 3, name: "Patrick", flavour: "Strawberry", age: 25 }, { id: 4, name: "Jean", flavour: "Mint", age: 31 }, { id: 5, name: "Ahmad", flavour: "vanilla", age: 18 }, { id: 6, name: "Ali", flavour: "Bubblegum", age: 19 }, { id: 7, name: "Frank", flavour: "Pistachio", age: 23 }, ], }; function changePropertyName(arr, oldName, newName) { return arr.map((o) => { return Object.keys(o).reduce((acc, curr) => { curr === oldName ? (acc[newName] = o[oldName]) : (acc[curr] = o[curr]); return acc; }, {}); }); } console.log(changePropertyName(data.info, "flavour", "bestFlavour"));

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Answer 2

This is how you can do it. Easy, simple and nasty solution.

 const data = { owner: 'Jun31d', info: [ { id: 1, name: 'bob', flavour: 'vanilla', age: 43 }, { id: 2, name: 'Juneid', flavour: 'Chocolate', age: 19 }, { id: 3, name: 'Patrick', flavour: 'Strawberry', age: 25 }, { id: 4, name: 'Jean', flavour: 'Mint', age: 31 }, { id: 5, name: 'Ahmad', flavour: 'vanilla', age: 18 }, { id: 6, name: 'Ali', flavour: 'Bubblegum', age: 19 }, { id: 7, name: 'Frank', flavour: 'Pistachio', age: 23 } ] }; const renameProperty = (a, e, n) => a.map((el) => { el[n] = el[e]; delete el[e]; return el; }); console.log(renameProperty(data.info, "id", "_id"));