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Run results for:
Set vs Map vs Object for lookups
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=594069" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.1.1 Safari/605.1.15
Browser:
Safari 18
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Object lookup
511.3M/s
Map lookup
474.9M/s
Set lookup
321.2M/s
Array lookup
74.0M/s
View exact numbers
Test name
Executions per second
✓
Object lookup
511,277,088 Ops/sec
Map lookup
474,915,712 Ops/sec
Set lookup
321,203,104 Ops/sec
Array lookup
73,999,064 Ops/sec
Script Preparation code:
var list = ["Lorem", "ipsum", "dolor", "sit", "amet", "consectetur", "adipisicing", "elit.", "Ullam", "nesciunt", "debitis,", "facilis", "qui", "possimus", "minus", "rerum", "velit", "saepe", "magnam,", "voluptatum", "quos", "eveniet", "ducimus", "facere", "harum", "itaque", "atque", "assumenda", "reiciendis", "exercitationem"] var set = new Set(["Lorem", "ipsum", "dolor", "sit", "amet", "consectetur", "adipisicing", "elit.", "Ullam", "nesciunt", "debitis,", "facilis", "qui", "possimus", "minus", "rerum", "velit", "saepe", "magnam,", "voluptatum", "quos", "eveniet", "ducimus", "facere", "harum", "itaque", "atque", "assumenda", "reiciendis", "exercitationem"]) var map = new Map([ ["Lorem", true], ["ipsum", true], ["dolor", true], ["sit", true], ["amet", true], ["consectetur", true], ["adipisicing", true], ["elit.", true], ["Ullam", true], ["nesciunt", true], ["debitis,", true], ["facilis", true], ["qui", true], ["possimus", true], ["minus", true], ["rerum", true], ["velit", true], ["saepe", true], ["magnam,", true], ["voluptatum", true], ["quos", true], ["eveniet", true], ["ducimus", true], ["facere", true], ["harum", true], ["itaque", true], ["atque", true], ["assumenda", true], ["reiciendis", true], ["exercitationem", true], ]) var object = { "Lorem": true, "ipsum": true, "dolor": true, "sit": true, "amet": true, "consectetur": true, "adipisicing": true, "elit.": true, "Ullam": true, "nesciunt": true, "debitis,": true, "facilis": true, "qui": true, "possimus": true, "minus": true, "rerum": true, "velit": true, "saepe": true, "magnam,": true, "voluptatum": true, "quos": true, "eveniet": true, "ducimus": true, "facere": true, "harum": true, "itaque": true, "atque": true, "assumenda": true, "reiciendis": true, "exercitationem": true, }
Tests:
Object lookup
var b = object["consectetur"]
Map lookup
var b = map.has("consectetur")
Set lookup
var b = set.has("consectetur")
Array lookup
var b = list.find(e => e == "consectetur")