Run results for: Spread vs JSON.parse(JSON.stringify())

Run details:

User agent: Mozilla/5.0 (Linux; arm_64; Android 10; POCOPHONE F1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.104 YaBrowser/24.1.2.104.00 SA/3 Mobile Safari/537.36

Browser: Yandex Browser 24

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
✓ Spread	1,162,903 Ops/sec
JSON Parse & Stringify	101,716 Ops/sec

Tests:

Spread
var theJSON = { "squadName": "Super hero squad", "homeTown": "Metro City", "formed": 2016, "secretBase": "Super tower", "active": true, "members": [ { "name": "Molecule Man", "age": 29, "secretIdentity": "Dan Jukes", "powers": [ "Radiation resistance", "Turning tiny", "Radiation blast" ] }, { "name": "Madame Uppercut", "age": 39, "secretIdentity": "Jane Wilson", "powers": [ "Million tonne punch", "Damage resistance", "Superhuman reflexes" ] }, { "name": "Eternal Flame", "age": 1000000, "secretIdentity": "Unknown", "powers": [ "Immortality", "Heat Immunity", "Inferno", "Teleportation", "Interdimensional travel" ] } ] } var result = {...theJSON}
JSON Parse & Stringify
var theJSON = { "squadName": "Super hero squad", "homeTown": "Metro City", "formed": 2016, "secretBase": "Super tower", "active": true, "members": [ { "name": "Molecule Man", "age": 29, "secretIdentity": "Dan Jukes", "powers": [ "Radiation resistance", "Turning tiny", "Radiation blast" ] }, { "name": "Madame Uppercut", "age": 39, "secretIdentity": "Jane Wilson", "powers": [ "Million tonne punch", "Damage resistance", "Superhuman reflexes" ] }, { "name": "Eternal Flame", "age": 1000000, "secretIdentity": "Unknown", "powers": [ "Immortality", "Heat Immunity", "Inferno", "Teleportation", "Interdimensional travel" ] } ] } var result = JSON.parse(JSON.stringify(theJSON))

Run results for: Spread vs JSON.parse(JSON.stringify())

Benchmarks spread vs JSON.parse(JSON.stringify())

Spread

JSON Parse & Stringify