var html = "<p>A</p><table><tr><td>1</td><td>2</td></tr></table><p>B</p>";
/<table\b[^>]*>/i.test(html)
/<table\b[^>]*>/i.exec(html)
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