scroll events

JD Tech

Oct 20, 2023 · Frontend Development

Common Methods for Listening to List Item Exposure in Frontend Development

This article explains why front‑end data‑collection (exposure) points are crucial, outlines three main techniques—estimating visibility from paginated data, listening to scroll events with bounding‑box calculations, and using the IntersectionObserver API—detailing their implementation, advantages, drawbacks, and best‑practice usage across H5, mini‑programs, and Taro.