Seamless up/down scrolling with javascript

This article mainly introduces the seamless scroll up and down effects implemented by javascript, and provides the functions of seamless scrolling and responding to mouse sliding over and stopping scrolling, which is simple and practical, if you need it, refer to the example in this article to describe how javascript achieves seamless up/down scrolling. We will share this with you for your reference. The details are as follows:

We have introduced the seamless rolling effect between the left and right sides of JS. Now we can perform seamless Rolling-up and down. Other codes are similar to those of left and right. They only change the offsetTop value and do not need to calculate the overall width of ul.

  
   Seamless Rolling-up/down