對於移動端的觸摸事件，我們通過touchstart、touchmove、touchend實現，PC端一般使用mousedown、mousemove、mouseup實現。
我們獲取事件坐標，原生js獲取方式
| mousedown | event.pageX |
| mousemove | event.pageX |
| mouseup | event.pageX |
| touchstart | event.touches[0].pageX & event.changedTouches[0].pageX & event.targetTouches[0].pageX |
| touchmove | event.touches[0].pageX & event.changedTouches[0].pageX & event.targetTouches[0].pageX |
| touchend | event.touches[0].pageX & event.changedTouches[0].pageX & event.targetTouches[0].pageX |
jQuery獲取方式
| mousedown | event.pageX |
| mousemove | event.pageX |
| mouseup | event.pageX |
| touchstart | event.originalEvent.touches[0].pageX & event.originalEvent.changedTouches[0].pageX & event.originalEvent.targetTouches[0].pageX |
| touchmove | event.originalEvent.touches[0].pageX & event.originalEvent.changedTouches[0].pageX & event.originalEvent.targetTouches[0].pageX |
| touchend | event.originalEvent.changedTouches[0].pageX & event.originalEvent.targetTouches[0].pageX |
其中關於touch觸摸事件的觸摸列表：
touches ：當前位於屏幕上的所有手指的一個列表。
targetTouches ：位於當前DOM元素上的手指的一個列表。
changedTouches ：涉及當前事件的手指的一個列表。
對於jQuery中在移動端獲取坐標使用的event.originalEvent，有以下:
It's also important to note that the event object contains a property called originalEvent, which is the event object that the browser itself created. jQuery wraps this native event object with some useful methods and properties, but in some instances, you'll need to access the original event via event.originalEvent for instance. This is especially useful for touch events on mobile devices and tablets.
event.originalEvent is usually just the native event (also described here).
However, if the browser is compatible, and the event was a touch event then that API will be exposed through event.originalEvent.
The short answer is that event.originalEvent is not always the same, it depends on which event type triggered the handler, and on the environment of the browser.
關於event.originalEvent說明的地址鏈接：http://stackoverflow.com/questions/16674963/event-originalevent-jquery
關於touch事件的補充內容地址鏈接：http://blog.csdn.net/clh604/article/details/9861411