Benchmark: JSON.parse + JSON.stringify vs native structuredClone

Script Preparation code:

var MyObject = {
  description: 'Creates a deep copy of source, which should be an object or an array.',
  myNumber: 123456789,
  myBoolean: true,
  jayson: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  }
};

var myCopy = null;

Tests:

JSON.stringify
myCopy = JSON.parse(JSON.stringify(MyObject));
structuredClone
myCopy = structuredClone(MyObject);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
JSON.stringify
structuredClone

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Mobile Safari/537.36

Browser/OS: Chrome Mobile 141 on Android

View result in a separate tab

Test name	Executions per second
JSON.stringify	830219.1 Ops/sec
structuredClone	159968.8 Ops/sec

Related benchmarks:

JSON.parse + JSON.stringify vs native structuredClone (version: 1)

JSON.parse + JSON.stringify vs structuredClone

Comparing performance of: JSON.stringify vs structuredClone

Created: 6 months ago by: Guest

Jump to the latest result

JSON.stringify

structuredClone

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A