Run results for: body slector speed

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 10 months ago

Test name	Executions per second
class	24589330.0 Ops/sec
body + class	17050362.0 Ops/sec
data	10851972.0 Ops/sec
body + data	10299675.0 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

/*your preparation JavaScript code goes here
To execute async code during the script preparation, wrap it as function globalMeasureThatScriptPrepareFunction, example:*/
async function globalMeasureThatScriptPrepareFunction() {
  document.body.dataset.test = "test";
  document.body.classList.add('test');
}

Tests:

class
document.querySelector('.test')
body + class
document.querySelector('body.test')
data
document.querySelector('[data-test]')
body + data
document.querySelector('body[data-test]')

Run results for: body slector speed

class

body + class

data

body + data