Getting Started with JQuery - Use the one() method to bind event processing functions (triggered only once)_javascript skills

1. The one() method function is to bind a processing function that is only triggered once to the selected element. The syntax format of its call is: one(type, [data], fn)

The parameter type is the event type, that is, what type of event needs to be triggered; the parameter data is an optional parameter, indicating the additional data object passed to the event object as the event.data attribute value; fn is what is to be triggered when binding the event function.

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