trackpad

问题 I have created a site where users are able to scroll through a gallery using mouse scroll or arrow up/down. It is working like I want it to, and changing one image pr scroll when scrolling with a mouse. But if the user is scrolling with a trackpad it is almost impossible to scroll a single image at a time. So my question is: Is there a way to check if the user is scrolling by trackpad, and then changing the behavior of the scrolling, so it becomes less sensitive, and thereby easier to scroll

问题 Is there any way to detect if the client is using a touchpad vs. a mouse with Javascript? Or at least to get some reasonable estimate of the number of users that use touchpads as opposed to mice? 回答1: In the general case, there is no way to do what you want. ActiveX might allow you to see and examine USB devices, but in the best case, even if that is somehow possible, that limits you to IE users. Beyond that, there is no way to know. You might be able to discern patterns in how (or how often)