Run results for: selector speed

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36

Browser: Chrome 118

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

class

6.3M/s

data + tag

2.5M/s

data

2.5M/s

View exact numbers

Test name	Executions per second
✓ class	6,269,902 Ops/sec
data + tag	2,535,507 Ops/sec
data	2,522,194 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]');