Benchmark: Cloning b81d8fae-190a-4c8b-a9af-08bebc52bf2a

Script Preparation code:

var deepClone1 = function(obj) {
  if (obj === null || typeof obj !== 'object') {
    return obj;
  }
  var clone = Object.assign({}, obj);
  Object.keys(clone).forEach(function(key) {
    clone[key] = deepClone1(clone[key]);
  });
  return clone;
}

var deepClone2 = function(obj) {
  if (obj === null || typeof obj !== 'object') {
    return obj;
  }
  var clone = Object.assign({}, obj);
  for (var key in clone) {
    clone[key] = deepClone2(clone[key]);
  }
  return clone;
}

var isObject = function(obj) {
  return typeof obj === 'object' && obj !== null;
}

var deepClone3 = function(obj) {
  if (!isObject(obj)) {
    return obj;
  }
  var clone = Object.assign({}, obj);
  for (var key in clone) {
    clone[key] = deepClone3(clone[key]);
  }
  return clone;
}

var deepClone4 = function(obj) {
  if (obj === null || typeof obj !== 'object') {
    return obj;
  }
  
  let clone = {...obj}
  for (const key in clone) {
    clone[key] = deepClone4(clone[key])
  }
  return clone
}

var testData = {
  name: 'John',
  age: 30,
  address: {
    street: '123 Main St',
    zip: 12345
  },
  hobbies: ['reading', 'swimming', 'hiking'],
  friends: [
    { name: 'Jane', age: 25 },
    { name: 'Bob', age: 32 },
    { name: 'Alice', age: 27 }
  ],
  job: {
    salary: 100000,
    benefits: ['health insurance', '401k', 'stock options']
  }
};

Tests:

DeepClone1
const r = deepClone1(testData)
deepClone2
const r = deepClone2(testData)
deepClone3
const r = deepClone3(testData)
deepClone4
const r = deepClone4(testData)
structuredClone
const r = structuredClone(testData)
JSON
const r = JSON.parse(JSON.stringify(testData))

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
DeepClone1
deepClone2
deepClone3
deepClone4
structuredClone
JSON

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/111.0

Browser/OS: Firefox 111 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
DeepClone1	507352.2 Ops/sec
deepClone2	548430.6 Ops/sec
deepClone3	542259.1 Ops/sec
deepClone4	514929.2 Ops/sec
structuredClone	418176.3 Ops/sec
JSON	650064.8 Ops/sec

Cloning b81d8fae-190a-4c8b-a9af-08bebc52bf2a (version: 0)

Comparing performance of: DeepClone1 vs deepClone2 vs deepClone3 vs deepClone4 vs structuredClone vs JSON

Created: one year ago by: Registered User

Jump to the latest result

DeepClone1

deepClone2

deepClone3

deepClone4

structuredClone

JSON

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A