Run results for: test12xxxx

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
1	2.7 Ops/sec
2	26671.6 Ops/sec

HTML Preparation code:

<div id="foo" class="s"></div>

AخA
 
<div id="foo" class="s"></div>

Tests:

var element = document.getElementById("foo");
var i = 1000;
while (i--) {
	element.className += " bar";
}

 
var element = document.getElementById("foo");var i = 1000;while (i--) {    element.className += " bar";}

var element = document.getElementById("foo");
var i = 1000;
while (i--) {
	element.className = "bar";
}

 
var element = document.getElementById("foo");var i = 1000;while (i--) {    element.className = "bar";}