Run results for: deepcopy vs splice

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0

Browser: Firefox 43

Operating system: Windows

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
deepCopy	1156.9 Ops/sec
splice	2205537.0 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'});