鼠标按键封装

可用于屏幕拖动鼠标翻页，常用于pad手指滑动翻屏操作等

/**
*鼠标按键封装
*/
function ScrollPage(){
        this.keydownTimer;
        this.beginX,this.beginY;
        this.endX,this.endY;
        this.pointX;
}
ScrollPage.prototype.unbind=function(obj,type,fn){
    obj.removeEventListener(type,fn,false);
}
ScrollPage.prototype.bind=function(obj,type,fn){
    obj.addEventListener(type,fn,false);
}
ScrollPage.prototype.mousemove=function(event){
    scrollPage.endX=event.clientX;
    scrollPage.endY=event.clientY;
}
ScrollPage.prototype.mousedown=function(event){
    if(event.button==0){
        scrollPage.beginX=event.clientX;
        scrollPage.beginY=event.clientY;
        scrollPage.bind(document,'mousemove',scrollPage.mousemove);
    }
}
ScrollPage.prototype.mouseup=function(event){
    if(event.button==0){
            scrollPage.pointX=(scrollPage.endX-scrollPage.beginX);
            if(scrollPage.pointX>100){
                //code
            }else if(scrollPage.pointX<-100){

　　　　　　　　//code

            }
            scrollPage.endX="undefind";
            scrollPage.beginX="undefind";
            scrollPage.unbind(document,'mousemove',scrollPage.mousemove);
    }else{
        return false;    
    }
}

使用方法：

window.captureEvents(Event.MOUSEUP | Event.MOUSEMOVE | Event.MOUSEDOWN);

var scrollPage = new ScrollPage();//实例化

scrollPage.bind(document, 'mousedown', scrollPage.mousedown, scrollPage);//绑定事件

  scrollPage.bind(document, 'mouseup', scrollPage.mouseup, scrollPage);//绑定事件