What events do not support bubbling?

The events that do not support bubbling are: 1. focus and blur events: triggered when the element gains or loses focus, but will not bubble to the parent element; 2. mouseenter and mouseleave events: when the mouse enters or Triggered when leaving the element, but will not bubble to the parent element; 3. mousemove event: triggered when the mouse moves within the element, but will not bubble to the parent element; 4. touchstart, touchmove and touchend events: when the touch device Triggered when the finger starts and moves to touch.

Operating system for this tutorial: Windows 10 system, Dell G3 computer.

In the HTML DOM, some events do not support bubbling, that is, they will not propagate to upper elements. These events are typically related to user interface interactions, such as mouse events and touch events. Here are some examples of events that do not support bubbling:

1. focus and blur events: fired when an element gains or loses focus, but does not bubble to the parent element.

2. mouseenter and mouseleave events: triggered when the mouse enters or leaves the element, but does not bubble to the parent element.

3. mousemove event: Triggered when the mouse moves within the element, but does not bubble to the parent element.

4. touchstart, touchmove, and touchend events: Fired when a finger on the touch device starts, moves, or ends touching, but does not bubble to the parent element.

The non-bubble feature of these events is to facilitate handling of specific user interaction behaviors, such as handling focus, mouseover, or touch operations. If you need to handle these events on the parent element, you can consider using other related events to simulate bubbling behavior, or use event delegation to bind the event handler to the parent element.

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