A quick tip on using the browser DevTools 'Break on Subtree Modification' feature to pause script execution when DOM nodes are dynamically added or removed. This is especially useful for debugging transient DOM changes — like nodes that appear and disappear during drag-and-drop interactions — that are otherwise too fast to inspect manually. The related options 'Break on attribute modification' and 'Break on node removal' are also mentioned as useful for debugging animations and complex interactions.
