Run results for: Closest performance: Class selector vs data attribute selector vs no result

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/116.0

Browser: Firefox 116

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Class selector	8440689.0 Ops/sec
Data attribute selector	8111014.5 Ops/sec
No result	4668895.5 Ops/sec

HTML Preparation code:

<div>
    <div>
        <div>
            <div>
                <div class="gtm" data-gtm='test'>
                    <div>
                        <div>
                            <div class="clicked"></div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>


<script>
    Benchmark.prototype.setup = () => {
        const element = document.querySelector('.clicked');
    };
</script>

Tests:

Class selector
const result = element.closest('.gtm')
Data attribute selector
const result = element.closest('[data-gtm]')
No result
const result = element.closest('[data-gtm-noop]')

Run results for: Closest performance: Class selector vs data attribute selector vs no result

Class selector

Data attribute selector

No result