Benchmark: JSON stringify vs slice vs structuredClone vs spread vs Array from

Script Preparation code:

var vertices = [
      [1, 0, 0, 0],
      [0, 1, 0, 0],
      [0, 0, 1, 0],
      [0, 0, 0, 1],
    ]

var myCopy = null;

Tests:

JSON.stringify
myCopy = JSON.parse(JSON.stringify(vertices));
slice
myCopy = vertices.slice();
Array from
myCopy = Array.from(vertices)
Spread
myCopy = [...vertices]
structuredClone
myCopy = structuredClone(vertices)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
JSON.stringify
slice
Array from
Spread
structuredClone

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 4 days ago)

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/111.0.5563.72 Mobile/15E148 Safari/604.1

Browser/OS: Chrome Mobile iOS 111 on iOS 16.3

View result in a separate tab

Test name	Executions per second
JSON.stringify	1018375.0 Ops/sec
slice	7496699.0 Ops/sec
Array from	3714106.0 Ops/sec
Spread	6517700.0 Ops/sec
structuredClone	729688.8 Ops/sec

JSON stringify vs slice vs structuredClone vs spread vs Array from (version: 0)

Comparing performance of: JSON.stringify vs slice vs Array from vs Spread vs structuredClone

Created: 4 days ago by: Guest

Jump to the latest result

JSON.stringify

slice

Array from

Spread

structuredClone

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A