Benchmark Run Result for: JSON stringify vs slice vs structuredClone vs spread vs Array from

JSON stringify vs slice vs structuredClone vs spread vs Array from

Date tested: one year ago

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Test name	Executions per second
JSON.stringify	1590880.2 Ops/sec
slice	10915437.0 Ops/sec
Array from	6616601.0 Ops/sec
Spread	10619306.0 Ops/sec
structuredClone	729029.9 Ops/sec

Benchmark definition (click to collapse):

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)

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