Mouse following, as the name suggests, is when the mouse moves, there is an animation followed by the mouse to move together.
|1||var oevent = evt | | window.event;|
This is to be compatible with IE and FF written, in IE under the window.event to represent the event object, and FF, is to the event function pass a parameter, this parameter represents the event object.
|1||Document.onmousemove = function (evt)|
Mouse Follow is what happens when the mouse moves.
|1||Document.documentElement.scrollTop | | Document.body.scrollTop;|
This is to be compatible with chrome and other browsers, scroll the distance from the top, chrome with the back, and other browsers with the front one.
Assigns the current position of the mouse to the position value of the element when the mouse is moved.
Oevent.clienty is the mouse's current y-coordinate position, add scrolltop distance is to scroll to not the first screen, the mouse follow the effect is still unchanged and write.
The code is as follows:
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