Run results for: In vs multiple equality

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 YaBrowser/23.7.3.823 Yowser/2.5 Safari/537.36

Browser: Yandex Browser 23

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Eql	1907366.0 Ops/sec
Arr	1914114.0 Ops/sec
Obj	1920012.8 Ops/sec
Map	1311159.6 Ops/sec
Set	1379920.8 Ops/sec

Script Preparation code:

const tst = "tst_str";
let last_res;
const arr = ["str", "str2", "str3", "str4"];
const obj = {"str": true, "str2": true, "str3": true, "str4": true};
const mp = new Map([["str", true], ["str2", true], ["str3", true], ["str4", true]]);
const st = new Set(["str", "str2", "str3", "str4"]);

Tests:

Eql
const tst = "tst_str"; let last_res; for (let i = 0; i < 1000; i++) { last_res = tst === "str" last_res = tst === "str2" last_res = tst === "str3" last_res = tst === "str4" }
Arr
const tst = "tst_str"; const arr = ["str", "str2", "str3", "str4"]; let last_res; for (let i = 0; i < 1000; i++) { last_res = arr.includes(tst); }
Obj
const tst = "tst_str"; const obj = {"str": true, "str2": true, "str3": true, "str4": true}; let last_res; for (let i = 0; i < 1000; i++) { last_res = tst in obj; }
Map
const tst = "tst_str"; const mp = new Map([["str", true], ["str2", true], ["str3", true], ["str4", true]]); let last_res; for (let i = 0; i < 1000; i++) { last_res = mp.has(tst); }
Set
const tst = "tst_str"; const st = new Set(["str", "str2", "str3", "str4"]); let last_res; for (let i = 0; i < 1000; i++) { last_res = st.has(tst); }

Run results for: In vs multiple equality

Eql

Arr

Obj

Map

Set