How to achieve automatic page up and down effect of the mouse

Take a novel page, you open the page first, then press the middle wheel button on the page, now everyone's mouse has the middle wheel button . The mouse without the mouse wheel button is out of print on the market. After pressing the wheel button, an icon button will appear. As shown below:

This circle icon button appears and you don't need to click the mouse, just drag the mouse to move up and down, press the left or right mouse button or Any key on the keyboard will stop scrolling. Of course, when you click the move icon button, you only need to move down a little bit, so you can move the page down without moving the mouse. The farther your mouse icon is from the icon at the circle, the faster the scrolling speed, and vice versa.

In fact, it's as simple as this. If you share it with everyone, if you don't move the mouse, the webpage will scroll. Then you press the mouse wheel button. This is also a detail problem that many novice users ignore. Then you will now try to automatically turn the mouse down and up.