CODEWITHSUNDEEP
javascriptarraysjson
balajivaishnav
balajivaishnav

Reputation: 2893

how to form array of arrays from object array in java script

Am trying form data from object array to array of arrays in JavaScript but am unable to get the result

Input Data { "sept" : [1,2,3], "oct" : [5,6,7] "Nov" : [7,8,9]}

Expected Output [["sept",1,2,3],["oct",5,6,7],["Nov",7,8,9]]

I have tried a lot I can able to get the keys by Object.Key() but can able to form the data with the value as expected output above, please help me to resolve this Thanks in advance

Upvotes: 0

Views: 53

Answers (5)

David Bradshaw
David Bradshaw

Reputation: 13077

The Ramda.js library has a function that does exactly this called toPairs()

https://ramdajs.com/docs/#toPairs

Upvotes: 0

Nina Scholz
Nina Scholz

Reputation: 386560

You could get the entries and map key and values in an array.

const 
    data = { sept: [1, 2, 3], oct: [5, 6, 7], Nov: [7, 8, 9] },
    result = Object.entries(data).map(([k, v]) => [k, ...v]);

console.log(result);

Upvotes: 1

hgb123
hgb123

Reputation: 14891

You could use Object.entries then spread the values along with the key

const data = { sept: [1, 2, 3], oct: [5, 6, 7], Nov: [7, 8, 9] }

const res = Object.entries(data).map(([key, value]) => [key, ...value])

console.log(res)

Upvotes: 1

Filip Wachowiak
Filip Wachowiak

Reputation: 73

Use Object.entries() and then .map() with ... - rest/spread operator

const object = {
  september: [1, 2, 3],
  october: [5, 6, 7],
  november: [7, 8, 9],
}

const result = Object.entries(object).map(([key, value])=>[key, ...value])

Upvotes: 1

Jasdeep Singh
Jasdeep Singh

Reputation: 8301

Just iterate over properties using for .. in loop, you will get the result.

const obj = {
  "sept": [1, 2, 3],
  "oct": [5, 6, 7],
  "Nov": [7, 8, 9],
}

const result = [];

for (const prop in obj) {
  result.push([prop, ...obj[prop]]);
}

console.log(result)

Upvotes: 1

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