Why do browsers throttle JavaScript timers?
Even if you’ve been doing JavaScript for a while, you might be surprised to learn that setTimeout(0) is not really setTimeout(0). Instead, it could run 4 milliseconds later: const start = performance.now() setTimeout(() => { // Likely 4ms console.log(performance.now() - start) }, 0) Nearly a decade ago when I was on the Microsoft Edge team, it was explained to me that browsers did this to avoid “a
Implementing Promisable setTimeout - Dmitry Kudryavtsev
In a world controlled by the event loop, setTimeout is the king of execution control. It allows you to schedule function calls to be executed later. However, it can’t do one thing - suspend the execution for a certain amount of time. Think of an equivalent to sleep(ms) from different languages. Let us now explore how we can implement it. Promisifying setTimeout In order to make setTimeout behave s
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JavaScript Event Loop: A Deep Dive
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