The article discusses the reasons behind browsers throttling JavaScript timers to improve performance and user experience. It examines how this throttling can help prevent excessive resource consumption and enhance battery life, especially on mobile devices. Additionally, it highlights the implications for developers in terms of how they manage timing functions in their applications.

The article explains the discrepancies in JavaScript date parsing, specifically how different date formats ('2025/05/28' vs. '2025-05-28') can lead to different results due to varying interpretations of local time and UTC across browsers. It traces the evolution of these parsing behaviors and introduces the upcoming Temporal API, which aims to eliminate ambiguity in date handling.