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Run results for:
Shallow copy vs structuredClone
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:139.0) Gecko/20100101 Firefox/139.0
Browser:
Firefox 139
Operating system:
Windows
Device Platform:
Desktop
Date tested:
9 months ago
Test name
Executions per second
Shallow copy
10371631.0 Ops/sec
structuredClone
464315.1 Ops/sec
Script Preparation code:
var MyObject = { string: 'string', number: 123456789, boolean: true, obj: { stringify: 'string', number: '123456789' } }; var copied = undefined;
Tests:
Shallow copy
copied = { ...MyObject }
structuredClone
copied = structuredClone(MyObject)