Run results for: Object literal vs JSON.parse

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_6_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.6.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 15

Operating system: iOS 15.6.1

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Object literal test	351126300.0 Ops/sec
Json parse	3946211.0 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