Run results for: JSON stringify vs slice vs structuredClone vs spread vs Array from - MeasureThat.net

Run details:

User agent: curl

Browser: Other

Operating system: Other

Device Platform: Desktop

Date tested: one month ago

Test name	Executions per second
JSON.stringify	1681217.6 Ops/sec
slice	10794345.0 Ops/sec
Array from	6507549.0 Ops/sec
Spread	10651668.0 Ops/sec
structuredClone	903532.1 Ops/sec

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)