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Run results for:
Instanceof vs constructor.name
Measure the performance of instanceOf operator vs comparing a basic string type.
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=561255" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36
Browser:
Chrome 130
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
instanceof
13252405.0 Ops/sec
property
25596230.0 Ops/sec
constructor comparison
13887711.0 Ops/sec
HTML Preparation code:
<script> class TestClass { constructor() { this.a = 2; this.t = 'mesh'; } } </script>
Script Preparation code:
var obj = new TestClass();
Tests:
instanceof
obj instanceof TestClass;
property
obj.constructor.name === "TestClass"
constructor comparison
obj.constructor === TestClass