var a = [1,2,3,4,5,6,7,8,9,10]
var b = new Set([1,2,3,4,5,6,7,8,9,10])
a.includes(10)
b.has(10)
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