Run results for: Spread vs Assing vs JSON - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.109 Safari/537.36

Browser: Chrome 98

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
JSON	2233001.0 Ops/sec
Assign	10063590.0 Ops/sec
Spread	122592600.0 Ops/sec

Website performance monitoring

Tests:

JSON
var obj = {a:'foo',b:'bar'}; var obj2 = JSON.parse(JSON.stringify(obj));
Assign
var obj = {a:'foo',b:'bar'}; var obj2 = Object.assign({}, obj);
Spread
var obj = {a:'foo',b:'bar'}; var obj2 = {...obj};