Run results for: Enum vs const vs string

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser: Chrome 129

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

compare inline number

20.0M/s

compare inline string

19.9M/s

compare const number

10.7M/s

compare const string

10.6M/s

Compare Enum string

9.4M/s

Compare Enum number

9.2M/s

View exact numbers

Test name	Executions per second
✓ compare inline number	19,958,186 Ops/sec
compare inline string	19,875,886 Ops/sec
compare const number	10,656,327 Ops/sec
compare const string	10,602,270 Ops/sec
Compare Enum string	9,374,693 Ops/sec
Compare Enum number	9,243,458 Ops/sec

Script Preparation code:

var MyEnum;
(function (MyEnum) {
  MyEnum[MyEnum["Unknown"] = 0] = "Unknown";
  MyEnum[MyEnum["Ok"] = 1] = "Ok";
  MyEnum[MyEnum["NotOk"] = 2] = "NotOk";
})(MyEnum || (MyEnum = {}));

var ConstEnumNumber = {
  Unknown: 0,
  Ok: 1,
  NotOk: 2
};

var ConstEnumString = {
  Unknown: "Unknown",
  Ok: "Ok",
  NotOk: "NotOk"
};

var unknownValueToCompareString = "Unknown";
var unknownValueToCompareNumber = 0;

Tests:

Compare Enum string
MyEnum.Unknown === unknownValueToCompareString;
Compare Enum number
MyEnum.Unknown === unknownValueToCompareNumber;
compare const string
ConstEnumString.Unknown === unknownValueToCompareString;
compare const number
ConstEnumString.Unknown === unknownValueToCompareNumber;
compare inline string
"Unknown" === unknownValueToCompareString;
compare inline number
0 === unknownValueToCompareNumber;