Benchmark: set.has vs object key lookup vs array includes

Script Preparation code:

var a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
var b = {1: true, 2: true, 3: true, 4: true, 5: true, 6: true, 7: true, 8: true, 9: true, 10: true}
var c = new Set(a);

Tests:

includes
return a.includes(9)
key lookup
return !!b['9']
set has
return c.has(9)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
includes
key lookup
set has

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 9 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36

Browser/OS: Chrome 114 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
includes	17980640.0 Ops/sec
key lookup	17402100.0 Ops/sec
set has	18025800.0 Ops/sec

set.has vs object key lookup vs array includes (version: 0)

Comparing performance of: includes vs key lookup vs set has

Created: 9 months ago by: Guest

Jump to the latest result

includes

key lookup

set has

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A