Run results for: getElementById vs getElementsByName

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.4 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.4

Device Platform: Mobile

Date tested: one year ago

Benchmark engine: Benchmark.js

getElementById

287.8M/s

getElementsByName

43.3M/s

View exact numbers

Test name	Executions per second
✓ getElementById	287,799,616 Ops/sec
getElementsByName	43,278,236 Ops/sec

HTML Preparation code:

<div id="testdiv">
  <div id="unique" class="unique" name="unique" data-unique="1">test</div>
</div>

Script Preparation code:

var i, imax;
var doc = document;

Tests: