Run results for: selector speed

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:139.0) Gecko/20100101 Firefox/139.0

Browser: Firefox 139

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 10 months ago

Test name	Executions per second
class	9130299.0 Ops/sec
data	8819816.0 Ops/sec
data + tag	7793367.5 Ops/sec

HTML Preparation code:

<div class="hello" id="hello" data-hello>Hello</div>

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() {
    // This function is optional, feel free to remove it.
    // await someThing();
}

Tests:

class
document.querySelector('.hello');
data
document.querySelector('[data-hello]');
data + tag
document.querySelector('div[data-hello]');

Run results for: selector speed

class

data

data + tag