How to determine the direction of scroll event in jquery

Jquery method to determine the direction of the scroll event: use the [scrollTop()] method to set or return the vertical scroll bar position of the selected element, the syntax is [$(selector).scrollTop(position)].

The operating environment of this tutorial: Windows 7 system, jquery version 3.2.1. This method is suitable for all brands of computers.

jquery's method of determining the direction of a scrolling event:

In jQuery, you can use the scrollTop() method to determine the direction of a scrolling event. The scrollTop() method is used to set or Returns the vertical scroll bar position of the selected element. Using this method, we can determine the scroll direction.

jQuery scrollTop()Method

scrollTop() method sets or returns the vertical scroll bar position of the selected element.

Tip: When the scroll bar is at the top, the position is 0.

Syntax:

$(selector).scrollTop(position)

Parameters: This method accepts a single parameter position, which is optional. It is used to specify the vertical scroll bar position in pixels.

Return value: Returns the vertical position of the scroll bar of the selected element.

Example:

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