Run results for: at vs index

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0

Browser: Firefox 115

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
get array element using at	945699.9 Ops/sec
get array element using index	1242791.0 Ops/sec

Script Preparation code:

var ARRAY_LENGTH = 1000;
var randomArray = [];
for (var i = 0; i < ARRAY_LENGTH; i++) {
    randomArray.push(Math.random())
};

Tests:

get array element using at
for(var i = 0; i<ARRAY_LENGTH; i++) { let a = randomArray.at(i); }
get array element using index
for(var i = 0; i<ARRAY_LENGTH; i++) { let a = randomArray[i]; }