Run results for: deepcopy vs splice

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36

Browser: Chrome 83

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
deepCopy	1735.7 Ops/sec
splice	4904791.5 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'});