Run results for: Object literal vs JSON.parse

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/113.2 Mobile/15E148 Safari/605.1.15

Browser: Mobile Safari 16

Operating system: iOS 16.4.1

Device Platform: Mobile

Date tested: 11 months ago

Test name	Executions per second
Object literal test	228192500.0 Ops/sec
Json parse	3480150.0 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;

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.

Object literal test

Json parse