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Run results for:
InstanceOf vs String type
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=597992" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:137.0) Gecko/20100101 Firefox/137.0
Browser:
Firefox 137
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
string type
1828.3M/s
string type + undefined
1825.1M/s
property
1749.6M/s
instanceof
166.2M/s
View exact numbers
Test name
Executions per second
✓
string type
1,828,309,760 Ops/sec
string type + undefined
1,825,063,808 Ops/sec
property
1,749,559,296 Ops/sec
instanceof
166,165,632 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;
string type
obj.t === 'mesh'
string type + undefined
obj.t !== undefined
property
obj.a !== undefined