Why do reflows negatively affect performance?

By Lydia Hallie on

Layout recalculations, or “reflows”, happen when we change a layout-related property, such as an element’s width, height, or margin. Reflows can happen accidentally or on purpose.   For instance, you might want to have a feature that switches from a grid view to a list view.  In that case, triggering a reflow is essential for […]