Run results for: InstanceOf vs String type

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 117

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

string type

4.4M/s

instanceof

1.8M/s

property

1.4M/s

string type + undefined

1.4M/s

View exact numbers

HTML Preparation code:

<script>
class TestClass {
    constructor() {
        this.a = 2;
        this.t = 'mesh';
    }
}
</script>

Script Preparation code:

var obj = new TestClass();

Tests: