var someFloat = 0.123456789;
+someFloat.toFixed(4);
var nb = Math.pow(10, 4);
(Math.round(someFloat*nb)/nb);
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