Benchmark: Data Properties vs. Accessor Properties vs. Getter / Setter Methods

Data Properties vs. Accessor Properties vs. Getter / Setter Methods (version: 0)

The purpose of this benchmark is to determine the performance differences between data properties, accessor properties and getters / setter functions.

Comparing performance of: Read from data property vs Write to data property vs Read from accessor method vs Write to mutator method vs Read from object literal property vs Write to object literal property vs Read from object literal property on prototype vs Write to object literal property on prototype

Created: 7 years ago by: Registered User

Jump to the latest result

Script Preparation code:

var data = {
  property: property
};

var property = undefined;

var method = {
  getProperty: function() {
    return property;
  },

  setProperty: function(value) {
    property = value;
  }
};

var objectLiteralAccessor = {
  get property() {
    return property;
  },
  set property(value) {
    property = value;
  }
};

function Class() {
}

Class.prototype = {
  get property() {
    return property;
  },
  set property(value) {
    property = value;
  }
};
    
var prototypeAccessor = new Class();

Tests:

Read from data property
var value = data.property;
Write to data property
data.property = true;
Read from accessor method
var value = method.getProperty();
Write to mutator method
method.setProperty(true);
Read from object literal property
var value = objectLiteralAccessor.property;
Write to object literal property
objectLiteralAccessor.property = true;
Read from object literal property on prototype
var value = prototypeAccessor.property;
Write to object literal property on prototype
prototypeAccessor.property = true;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Read from data property
Write to data property
Read from accessor method
Write to mutator method
Read from object literal property
Write to object literal property
Read from object literal property on prototype
Write to object literal property on prototype

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 24 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Browser/OS: Chrome 124 on Windows

View result in a separate tab

Test name	Executions per second
Read from data property	15366900.0 Ops/sec
Write to data property	15526390.0 Ops/sec
Read from accessor method	8206030.0 Ops/sec
Write to mutator method	6583314.0 Ops/sec
Read from object literal property	7084780.0 Ops/sec
Write to object literal property	4219480.0 Ops/sec
Read from object literal property on prototype	8155549.0 Ops/sec
Write to object literal property on prototype	6900560.0 Ops/sec

Data Properties vs. Accessor Properties vs. Getter / Setter Methods (version: 0)

The purpose of this benchmark is to determine the performance differences between data properties, accessor properties and getters / setter functions.

Created: 7 years ago by: Registered User

Jump to the latest result

Read from data property

Write to data property

Read from accessor method

Write to mutator method

Read from object literal property

Write to object literal property

Read from object literal property on prototype

Write to object literal property on prototype

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A