var params = [ "hello", true, 7 ]
var other = [ ...params, 'new' ]
params.push('new');
params[ params.length ] = 'new';
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