Run results for: instanceOf vs __proto__

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser: Chrome 130

Operating system: Windows

Device Platform: Desktop

Date tested: one month ago

Test name	Executions per second
instanceOf	180198.5 Ops/sec
__proto__	180926.7 Ops/sec

Script Preparation code:

var a = new Map();

Tests: