[null,null,["上次更新時間:2024-09-03 (世界標準時間)。"],[[["Reflow, the web browser's process of recalculating element positions for re-rendering, can significantly impact web page performance as a user-blocking operation."],["Various actions, like resizing the browser window or manipulating the DOM with JavaScript, can trigger reflow, with some operations being more time-consuming than others."],["Developers can minimize reflow by reducing DOM depth, optimizing CSS rules, using absolute or fixed positioning for complex rendering changes, and avoiding complex CSS selectors."],["Modern browsers are continuously improving reflow times, but understanding and mitigating its impact remains crucial for creating performant web experiences."]]],["Reflow, a browser process that recalculates element positions and geometries, can be triggered by actions like resizing the window, DOM manipulation, or style changes. To minimize reflow, developers should reduce DOM depth, minimize CSS rules and selectors, and perform complex rendering changes outside the normal flow using absolute or fixed positioning. Certain JavaScript style modifications cause varying degrees of reflow. Google prioritizes reflow considerations when designing web page features for enhanced user experience.\n"]]