zero-delay timer

ByteFE

Jun 10, 2021 · Frontend Development

Understanding the 4 ms Minimum Delay of setTimeout and Implementing a Zero‑Delay Timer with postMessage

This article explains why browsers enforce a minimum 4 ms delay for nested setTimeout calls, demonstrates how to bypass it using window.postMessage to create a true zero‑delay timer, and compares the performance of both approaches with detailed experiments and visualizations.