Run results for: deepcopy vs splice

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 13_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/84.0.4147.71 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 84

Operating system: iOS 13.5

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
deepCopy	805.3 Ops/sec
splice	2137582.0 Ops/sec

Script Preparation code:

var list = [...Array(1000).keys()].map((index) => {return {id: index, name: `PRODUCT_${index}`}});
var deepCopy = function deepCopy(item) {
   return JSON.parse(JSON.stringify(item));
}

Tests:

deepCopy
const copy = deepCopy(list); list[50] = {id: 50, name: 'CUST_50'};
splice
list.splice(49, 1, {id: 50, name: 'CUST_50'});