Benchmark: Performance difference between Object.defineProperty() and Object.defineProperties()

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

var testProps = {}
for(let i = 1; i < 100; i++){
  if(i%2){
    testProps[`aa${i}`] = {
      value: i,
      writable: true,
      enumerable: false,
      configurable: false
    }
  } else {
    testProps[`aa${i}`] = {
      get(){
        return this[`bb${i}`]
      },
      set(nv){
        this[`bb${i}`] = 2 * nv + 3;
        return true;
      },
      enumerable: false,
      configurable: false
    }
  }
}

Tests:

Object.defineProperty()
const testObj = {}, testProps_ = {...testProps}; for(let a in testProps_){ Object.defineProperty(testObj, a, testProps_[a]); }
Object.defineProperties()
const testObj = {}, testProps_ = {...testProps}; Object.defineProperties(testObj, testProps_)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object.defineProperty()
Object.defineProperties()

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one month ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36

Browser/OS: Chrome 144 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Object.defineProperty()	49317.1 Ops/sec
Object.defineProperties()	33174.1 Ops/sec

Related benchmarks:

Performance difference between Object.defineProperty() and Object.defineProperties() (version: 1)

Comparing performance of: Object.defineProperty() vs Object.defineProperties()

Created: one year ago by: Registered User

Jump to the latest result

Object.defineProperty()

Object.defineProperties()

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A