MeasureThat.net

Run results for: normal object vs mutated object

Go to the benchmark
Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36
Chrome 133
Linux
Desktop
one month ago
Test name Executions per second
normal object 3372198.5 Ops/sec
mutated 3417933.8 Ops/sec
HTML Preparation code:
AخA
 
1
<!--your preparation HTML code goes here-->
Script Preparation code:
 
'use strict';
class a {a=3;b(){blur()}}
class b {a=3;b(){blur()}}
let obj1 = new a
let obj2 = new a
Reflect.setPrototypeOf(obj2, b.prototype)
Tests:

  • normal object

     
    obj1.a = 2
    obj1.a
    delete obj1.a
    obj1.b()
    'a'in obj1
    Object.defineProperty(obj1,'a',{value:2})

  • mutated

     
    obj2.a = 2
    obj2.a
    delete obj2.a
    obj2.b()
    'a'in obj2
    Object.defineProperty(obj2,'a',{value:2})