CODEWITHSUNDEEP
javascriptarraysjson
Andy
Andy

Reputation: 1

Remove Duplicate value from JSON Object

I have a JSON object

var data = [
{totalTime: 67, phoneNo: "400-234-090"}, 
{totalTime: 301, phoneNo: "701-080-080"}, 
{totalTime: 300, phoneNo: "400-234-090"}
]

I want to remove duplicate object. Please guide. Output should be as below one

var data = [{totalTime: 301, phoneNo: "701-080-080"}]

Upvotes: 0

Views: 91

Answers (3)

Akrion
Akrion

Reputation: 18515

Another option (1 reduce, 1 filter and spread):

var data = [
{totalTime: 67, phoneNo: "400-234-090"}, 
{totalTime: 301, phoneNo: "701-080-080"}, 
{totalTime: 300, phoneNo: "400-234-090"}
];

console.log(data.reduce((x, { phoneNo }, i, a) => 
  a.filter((y) => 
	y.phoneNo === phoneNo).length > 1 ? x : [...x, a[i]], []))

Upvotes: 0

Prasanna
Prasanna

Reputation: 4636

You can just use two filters such that, we will only select objects that are just single entry in the array

const data = [
  {totalTime: 67, phoneNo: "400-234-090"}, 
  {totalTime: 301, phoneNo: "701-080-080"}, 
  {totalTime: 300, phoneNo: "400-234-090"}
]

const newData = data.filter(outer => 
  data.filter(inner => 
    outer.phoneNo === inner.phoneNo
  ).length === 1
)

console.log(newData)

Upvotes: 1

CertainPerformance
CertainPerformance

Reputation: 370669

For a solution with low complexity, I'd first make an object that counts the occurences of each phoneNo, and then filter the input by the count of each object's number being 1:

var data = [
  {totalTime: 67, phoneNo: "400-234-090"}, 
  {totalTime: 301, phoneNo: "701-080-080"}, 
  {totalTime: 300, phoneNo: "400-234-090"}
];
const phoneCounts = data.reduce((a, { phoneNo }) => {
  a[phoneNo] = (a[phoneNo] || 0) + 1;
  return a;
}, {});
console.log(
  data.filter(({ phoneNo }) => phoneCounts[phoneNo] === 1)
);

Upvotes: 2

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