CODEWITHSUNDEEP
javascriptarray-map
user19476497
user19476497

Reputation: 557

How can I change the key value in an object when creating an array value while using the map function in React?

I have the data of the array object in a variable called hi[0].child.

hi[0].child = [
    {code: "food", name: "buger"},
    {code: "cloth", name: "outher"},
    {code: "fruit", name: "apple"},
]

What I want to do is create a variable called hello, change the key value of hi[0].child, and put it in the hello variable.

For example, the key value of code is changed to value and name is changed to label. The values ​​I want are as below.

expecter answer 

hello = [
    {label: "burger", value: "food"},
    {label: "outher", value: "cloth"},
    {label: "apple", value: "fruit"},

]

But when I use my code I get these errors.

Did not expect a type annotation here

so How can i fix my code?

this is my code

let hello = []


hi[0].child.map((v) => {
hello.push(label: v.name, value: v.code)
})

Upvotes: 1

Views: 1915

Answers (2)

Badhusha
Badhusha

Reputation: 128

Change the code like this

let hello = []
hi[0].child.map((v) => {
  hello.push({label: v.name, value: v.code})
})

You need to pass object

Upvotes: -1

Som Shekhar Mukherjee
Som Shekhar Mukherjee

Reputation: 8168

You've missed the curly brackets for the object, it should be hello.push({ label: v.name, value: v.code }).

Also, map is not the right method to be used here, use forEach instead or use the value returned from map (as shown below).

const data = [
  { code: "food", name: "buger" },
  { code: "cloth", name: "outher" },
  { code: "fruit", name: "apple" },
];

const updatedData = data.map((v) => ({ label: v.code, value: v.name }));

console.log(updatedData);

Upvotes: 3

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