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json stringify parse vs spread vs structuredClone
(version: 1)
Comparing performance of:
toString vs JSON.stringify vs structured clone
Created:
one year ago
by:
Guest
Go to the latest result
Script Preparation code:
function makeTestData() { return { name: "Matheus de Sousa Martins", age: 30, phone: "999999999999" }; }
Tests:
toString
let a = {...makeTestData()}
JSON.stringify
JSON.parse(JSON.stringify(makeTestData()));
structured clone
structuredClone(makeTestData());
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
toString
JSON.stringify
structured clone
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
11 months ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36 Edg/139.0.0.0
Browser/OS:
Chrome 139 on Windows
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Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=616159" width="100%" height="500px"></iframe>
toString
60.0M/s
JSON.stringify
3.6M/s
structured clone
603K/s
View exact numbers
Test name
Executions per second
✓
toString
60,005,980 Ops/sec
JSON.stringify
3,567,354 Ops/sec
structured clone
602,609 Ops/sec
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