Run results for: getElementsByClassName, For i, For of, For each, Some, Every, Map 2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:133.0) Gecko/20100101 Firefox/133.0

Browser: Firefox 133

Operating system: Windows

Device Platform: Desktop

Date tested: 3 months ago

Test name	Executions per second
for i	2893168.8 Ops/sec
for of	2605952.8 Ops/sec
forEach	2232875.0 Ops/sec
some	2284526.0 Ops/sec
every	2260087.0 Ops/sec
map	1971515.2 Ops/sec

Script Preparation code:

var newBody = document.createElement("div");


for (let i; i < 1000; i++) {
	var divAdded = document.createElement("div");
	divAdded.classList.add("ggclass");
	newBody.appendChild(divAdded);
}

Tests:

for i
var case1 = document.getElementsByClassName("ggclass"); for (var i = 0; i < case1.length; i++) { // 반복할 내용 console.log(case1[i]); }
for of
var case1 = document.getElementsByClassName("ggclass"); for (var element of case1) { // 반복할 내용 console.log(element); }
forEach
var case1 = document.getElementsByClassName("ggclass"); Array.from(case1).forEach(function (element) { // 반복할 내용 console.log(element); });
some
var case1 = document.getElementsByClassName("ggclass"); Array.from(case1).some(function (element) { console.log(element); return false; });
every
var case1 = document.getElementsByClassName("ggclass"); var allSatisfy = Array.from(case1).every(function (element) { console.log(element); return true; // 조건을 만족하면 true, 아니면 false });
map
var case1 = document.getElementsByClassName("ggclass"); var newArray = Array.from(case1).map(function (element) { console.log(element); return 변환된값; });

Run results for: getElementsByClassName, For i, For of, For each, Some, Every, Map 2

getElementsByClassName, For i, For of, For each, Some, Every, Map

for i

for of

forEach

some

every

map