Benchmark: Set vs Map vs Object for lookups vs objLookup

Script Preparation code:

var objList= [
  { name: "Lorem" },
  { name: "ipsum" },
  { name: "dolor" },
  { name: "sit" },
  { name: "amet" },
  { name: "consectetur" },
  { name: "adipisicing" },
  { name: "elit." },
  { name: "Ullam" },
  { name: "nesciunt" },
  { name: "debitis," },
  { name: "facilis" },
  { name: "qui" },
  { name: "possimus" },
  { name: "minus" },
  { name: "rerum" },
  { name: "velit" },
  { name: "saepe" },
  { name: "magnam," },
  { name: "voluptatum" },
  { name: "quos" },
  { name: "eveniet" },
  { name: "ducimus" },
  { name: "facere" },
  { name: "harum" },
  { name: "itaque" },
  { name: "atque" },
  { name: "assumenda" },
  { name: "reiciendis" },
  { name: "exercitationem" }
]
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")
Obj array lookup
var b = objList.some(o=>o.name == "consectetur")

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

Object lookup

139.3M/s

Set lookup

134.3M/s

Map lookup

123.9M/s

Obj array lookup

75.9M/s

Array lookup

70.7M/s

Fastest: Object lookup (2.0x faster)

View exact numbers

✓ Object lookup: 139,261,808 ops/sec
• Set lookup: 134,319,664 ops/sec
• Map lookup: 123,886,016 ops/sec
• Obj array lookup: 75,909,720 ops/sec
• Array lookup: 70,746,528 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object lookup
Map lookup
Set lookup
Array lookup
Obj array lookup

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Android 10; Mobile; rv:150.0) Gecko/150.0 Firefox/150.0

Browser/OS: Firefox Mobile 150 on Android

View result in a separate tab

Object lookup

193.8M/s

Set lookup

193.7M/s

Map lookup

193.7M/s

Array lookup

11.1M/s

Obj array lookup

7.1M/s

View exact numbers

Test name	Executions per second
✓ Object lookup	193,776,400 Ops/sec
Set lookup	193,740,864 Ops/sec
Map lookup	193,674,128 Ops/sec
Array lookup	11,086,190 Ops/sec
Obj array lookup	7,057,786 Ops/sec

Set vs Map vs Object for lookups vs objLookup (version: 1)

Comparing performance of: `Object lookup vs Map lookup vs Set lookup vs Array lookup vs Obj array lookup`

Created: one year ago by: Guest

Go to the latest result

Object lookup

Map lookup

Set lookup

Array lookup

Obj array lookup

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Set vs Map vs Object for lookups vs objLookup (version: 1)

Comparing performance of: Object lookup vs Map lookup vs Set lookup vs Array lookup vs Obj array lookup

Created: one year ago by: Guest

Go to the latest result

Object lookup

Map lookup

Set lookup

Array lookup

Obj array lookup

Historical Performance Data aggregated from 5 community runs

Desktop Results:

Chrome 5 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Object lookup vs Map lookup vs Set lookup vs Array lookup vs Obj array lookup`