Breaking Up with Long Tasks: Mastering Asynchronous Loops for Web Performance
This article delves into optimizing JavaScript loops to prevent blocking the main thread and improve web performance. The author highlights that using `for...of` loops or methods like `forEach` directly on large arrays can create long tasks, leading to a sluggish user experience. The solution involves using `scheduler.yield` or `setTimeout(0)` with `async/await` to break down long tasks into smaller ones, yielding control after each iteration to maintain responsiveness. The article further explores batch processing and frame rate optimization strategies to balance responsiveness and processing efficiency. Ultimately, it recommends choosing an appropriate batch size and strategy based on specific application needs for optimal user experience.
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