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Run results for:
Object literal vs JSON.parse
As long as the JSON string is only evaluated once, the JSON.parse approach is much faster compared to the JavaScript object literal, especially for cold loads.
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<iframe src="https://measurethat.net/Embed?id=510564" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36 Edg/122.0.0.0
Browser:
Chrome 122
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
Benchmark engine:
Benchmark.js
Object literal test
142.2M/s
Json parse
5.1M/s
View exact numbers
Test name
Executions per second
✓
Object literal test
142,178,960 Ops/sec
Json parse
5,093,812 Ops/sec
Tests:
Object literal test
const literal = { foo: 42, bar: 1337 }; literal.foo;
Json parse
const json = JSON.parse('{"foo":42,"bar":1337}'); json.foo;