Run results for: display vs position benchmark

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36

Browser: Chrome 95

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
show hide by display	318.4 Ops/sec
show hide by position	323.4 Ops/sec

HTML Preparation code:

<style type="text/css">
    .hide {
        display: none;
    }
    .pos {position: absolute !important;
       top: -9999px !important;
       left: -9999px !important;
      }
    
</style>
<div id="container"></div>

Script Preparation code:

var container = document.getElementById('container');
var item;
for (let i = 0; i < 100; i += 1) {
  	item = document.createElement('div')
  	const ul = document.createElement('ul');
	let html = [];
    for (let j = 0; j < 2000; j += 1) {
        html.push(`<li>${j}</li>`);
    }
	ul.innerHTML = html.join('');
	item.appendChild(ul);
 	container.appendChild(item)
}

Tests:

show hide by display
let i = 3000; while (i--) { item.classList.add("hide"); item.classList.remove("hide"); }
show hide by position
let i = 3000; while (i--) { item.classList.add("pos"); item.classList.remove("pos"); }

Run results for: display vs position benchmark

Test

show hide by display

show hide by position