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Run results for:
Splti vs Trim vs replace className
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=586449" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36
Browser:
Chrome 133
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
Split + filter Classname
5821.8 Ops/sec
Trim + replace ClassName
9503.6 Ops/sec
No Trim - Replace CLassName
7192.6 Ops/sec
HTML Preparation code:
<div id="foo" class="bar test space OK"></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:
Split + filter Classname
let element = document.getElementById("foo"); let i = 1000; while (i--) { const classes = element.className.split(/\s+/g) if (classes.length) { let selector = `${classes.join('.')}`; if (selector.endsWith('.')) { selector = `.${selector.slice(0, -1)}`; } } }
Trim + replace ClassName
let element = document.getElementById("foo"); let i = 1000; while (i--) { let selector = "." + element.className.trim().replace(/\s+/g, '.'); }
No Trim - Replace CLassName
let element = document.getElementById("foo"); let i = 1000; while (i--) { let selector = "." + element.className.replace(/\s+/g, '.'); if (selector.endsWith('.')) { selector = selector.slice(0, -1); } }