Run results for: createElement vs cloneNode + querySelector

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Windows

Device Platform: Desktop

Date tested: 10 months ago

Test name	Executions per second
createElement	4.5 Ops/sec
cloneNode + querySelector	6.2 Ops/sec

Tests:

createElement
let elements = []; for(let n=0; n<=100000;n++) { let container = document.createElement('div'); container.className = "container"; let divOne = document.createElement('div'); divOne.className = "divOne"; container.appendChild(divOne); let divTwo = document.createElement('div'); divTwo.className = "divTwo"; container.appendChild(divTwo); let divThree = document.createElement('div'); divThree.className = "divThree"; container.appendChild(divThree); elements.push({container, divOne, divTwo, divThree}); }
cloneNode + querySelector
let elements = []; const container = document.createElement('div'); container.className = "container"; let divOne = document.createElement('div'); divOne.className = "divOne"; container.appendChild(divOne); let divTwo = document.createElement('div'); divTwo.className = "divTwo"; container.appendChild(divTwo); let divThree = document.createElement('div'); divThree.className = "divThree"; container.appendChild(divThree); for(let n=0; n<=100000;n++) { const element = container.cloneNode(true); elements.push({ container: element, divOne: element.querySelector('.divOne'), divTwo: element.querySelector('.divTwo'), divThree: element.querySelector('.divThree') }); }