function Foo(){
this.foo = function(){};
}
var foo = new Foo();
foo.foo();
if(foo.foo!=null)foo.foo();
FAQ: FAQ
Source code: GitHub/MeasureThat.net
Report issues: MeasureThat.net/Issues
Based on: Benchmark.js
Facebook page: https://www.facebook.com/MeasureThat.Net
Python benchmarks support: Pyodide