Run results for: className vs classList for a new element

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36

Browser: Chrome 117

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
className	3332.0 Ops/sec
classList	1856.7 Ops/sec

Tests:

className
for (let i = 0; i < 1000; i++) { const div = document.createElement('div'); div.className = 'div'; }
classList
for (let i = 0; i < 1000; i++) { const div = document.createElement('div'); div.classList.add('div'); }