Benchmark: get object vs array key

Script Preparation code:

var array = []
var object1 = {}
var object2 = {}

for(var i = 0; i < 1e6; i++) {
    var v = Math.random()
    array[i] = v
    object1[i] = v
    object2[`v${i}`] = v
}

Tests:

array
var sum = 0 for(var i = 1e6 - 1; i >= 0; i--) { sum += array[i] } sum
object
var sum = 0 for(var i = 1e6 - 1; i >= 0; i--) { sum += object1[i] } sum
object with text field
var sum = 0 for(var i = 1e6 - 1; i >= 0; i--) { sum += object2[`v${i}`] } sum

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array
object
object with text field

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36

Browser/OS: Chrome 85 on Mac OS X 10.15.6

View result in a separate tab

Test name	Executions per second
array	14.1 Ops/sec
object	11.7 Ops/sec
object with text field	1.9 Ops/sec

get object vs array key (version: 0)

Comparing performance of: array vs object vs object with text field

Created: 3 years ago by: Guest

Jump to the latest result

array

object

object with text field

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A