Run results for: getElementById, querySelector, querySelectorAll and with if

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) EdgiOS/130.0.2849.80 Version/18.0 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.1

Device Platform: Mobile

Date tested: one year ago

with iF

51.0M/s

getElementById

41.3M/s

querySelector

5.0M/s

querySelectorAll

2.9M/s

View exact numbers

Test name	Executions per second
✓ with iF	50,972,996 Ops/sec
getElementById	41,342,128 Ops/sec
querySelector	5,038,106 Ops/sec
querySelectorAll	2,858,364 Ops/sec

HTML Preparation code:

<div id="test">Test</div>

Tests:

getElementById
document.getElementById("test");
querySelector
document.querySelector("#test")
querySelectorAll
document.querySelectorAll("#test")
with iF
var sel = '#test'; if (sel[0] === '#') { document.getElementById("test"); } else { document.querySelectorAll("#test") }