var a = [];
for(i=0;i<10000;i++) a.push(i);
var b = new Set(a)
a.indexOf(342);
b.has(342);
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