Run results for: Summing with EcmaScript6 Int16Array vs regular JS array

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36 OPR/102.0.0.0

Browser: Opera 102

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Int16Array: for..of	3490139.2 Ops/sec
Plain JS array: for..of	11216050.0 Ops/sec
Int16Array: for index	272903.0 Ops/sec
Plain JS array: for index	272229.9 Ops/sec
Int16Array: Array reduce: Arrow Function	1861762.2 Ops/sec
Plain JS array: Array reduce: Arrow Function	1865037.0 Ops/sec

Script Preparation code:

var int16 = new Int16Array(100);
var regular = [];

for(var i=0;i<100;i++){
  int16[i] = i;
  regular.push(i);
}

var add_arrow_fn = (a, b) => a + b
function add_plain_fn(a, b) { return a + b }

Tests:

Int16Array: for..of
let sum = 0 for (const value of int16) { sum = sum + value }
Plain JS array: for..of
let sum = 0 for (const value of regular) { sum = sum + value }
Int16Array: for index
let sum = 0; for (let i = 0; i < 100; i++) { sum = sum + int16[i]; }
Plain JS array: for index
let sum = 0; for (let i = 0; i < 100; i++) { sum = sum + regular[i]; }
Int16Array: Array reduce: Arrow Function
let sum = int16.reduce(add_arrow_fn, 0)
Plain JS array: Array reduce: Arrow Function
let sum = int16.reduce(add_arrow_fn, 0)

Run results for: Summing with EcmaScript6 Int16Array vs regular JS array

Int16Array: for..of

Plain JS array: for..of

Int16Array: for index

Plain JS array: for index

Int16Array: Array reduce: Arrow Function

Plain JS array: Array reduce: Arrow Function