Benchmark: Object cloning comparision

Script Preparation code:

var obj = {
	type: 'price',
	amount: '123',
	vatPercentage: 22,
	vatIncluded: true,
	vatId: 124153,
  	nestedObj: {
  		item1: 'abc',
  		item2: undefined
	}
};

var copy = undefined;

Tests:

Spread
copy = {...obj};
structuredClone
copy = structuredClone(obj);
JSON
copy = JSON.parse(JSON.stringify(obj));
simple assignment
copy = obj;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Spread
structuredClone
JSON
simple assignment

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_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36

Browser/OS: Chrome 110 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Spread	9849380.0 Ops/sec
structuredClone	549982.1 Ops/sec
JSON	983565.8 Ops/sec
simple assignment	12121800.0 Ops/sec

Object cloning comparision (version: 0)

Comparing performance of: Spread vs structuredClone vs JSON vs simple assignment

Created: one year ago by: Guest

Jump to the latest result

Spread

structuredClone

JSON

simple assignment

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A