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Run results for:
getElementById vs getElementsByClassName vs getElementsByName2
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=530127" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Android 12; Mobile; rv:126.0) Gecko/126.0 Firefox/126.0
Browser:
Firefox Mobile 126
Operating system:
Android
Device Platform:
Mobile
Date tested:
one year ago
Test name
Executions per second
getElementById
7667.8 Ops/sec
getElementsByClassName
7478.9 Ops/sec
getElementsByClassName[0]
2672.3 Ops/sec
getElementsByName
7266.0 Ops/sec
getElementsByName[0]
2581.5 Ops/sec
Script Preparation code:
let Zoo = document.createElement("div"); for (let i=0;i<1000;i++){ let foo = document.createElement("div"); foo.id= "foo"; foo.classList.add("foo"); foo.name= "foo"; Zoo.appendChild(foo); }
Tests:
getElementById
for (let i=0;i<1000;i++){ let bar1 = document.getElementById("foo"); }
getElementsByClassName
for (let i=0;i<1000;i++){ let bar2 = document.getElementsByClassName("foo"); }
getElementsByClassName[0]
for (let i=0;i<1000;i++){ let bar3 = document.getElementsByClassName("foo")[100]; }
getElementsByName
for (let i=0;i<1000;i++){ let bar4 = document.getElementsByName("foo"); }
getElementsByName[0]
for (let i=0;i<1000;i++){ let bar5 = document.getElementsByName("foo")[100]; }