Web Front-endJS TutorialSummary of implementation methods of JQuery UI's drag and drop function_jquery
The API provided by JQuery UI greatly simplifies the development of drag and drop functions. Just call the draggable and droppable functions on the drag source and target respectively.
Principle of Drag and Drop
First of all, we need to clarify a few concepts.
Source: drag source, element to be dragged.
Taerget: Drag and drop target, a container that can be placed into the source.
The drag action is broken down as follows:
1. drag start: press the mouse on the drag source (source) and start moving
2. drag move: during the movement
3. drag enter : move into the target container
4. drag leave: move out of the target container
5. drop: release the mouse on the target container
6. drag end: end
Before HTML5, page elements did not directly support drag events. Therefore, the drag-and-drop function is implemented by listening to mouse events and recording the drag-and-drop status.
The simplest example
The simplest drag does not change the container where the element is located, but only changes its position. An example is as follows:
Drag me!
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