<!--your preparation HTML code goes here-->
var a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
var b = new Set(a)
a.includes(5)
b.has(5)
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