iScroll适应IE8+,FIREFOX,CHROME

这两天一直在找一个既能适应PC又能适应手机触屏滑动的控件，可惜很多框架的组件在这方面还是有残缺的，因为目前的大部分PC是没有touch事件的

不过国外还好有几个比较好的控件在这方面还是有优势的，其中apple的iscroll算是一款做的比较好的组件，但是它也仅仅适应了HTML5和touch事件

但是我在开发的系统要求能够同时适应PC（特别是IE8）和手机，怎么办呢？找了好多资料，没有一款比较好的，没办法只能自己改造了，不过还好在知道HTML5和HTML4以下的区别后总体改起来还顺手，另外添加了如果不设置竖直滚动属性向上滑动时就会滑动整个窗口的功能，如下：

/*!
 * iScroll v4.2 ~ Copyright (c) 2012 edit by roger
 */
(function(window, doc){
var m = Math,
 dummyStyle = doc.createElement('div').style,
 vendor = (function () {
  var vendors = 't,webkitT,MozT,msT,OT'.split(','),
   t,
   i = 0,
   l = vendors.length;
  for ( ; i < l; i++ ) {
   t = vendors[i] + 'ransform';
   if ( t in dummyStyle ) {
    return vendors[i].substr(0, vendors[i].length - 1);
   }
  }
  return false;
 })(),
 cssVendor = vendor ? '-' + vendor.toLowerCase() + '-' : '',
 // Style properties
 transform = prefixStyle('transform'),
 transitionProperty = prefixStyle('transitionProperty'),
 transitionDuration = prefixStyle('transitionDuration'),
 transformOrigin = prefixStyle('transformOrigin'),
 transitionTimingFunction = prefixStyle('transitionTimingFunction'),
 transitionDelay = prefixStyle('transitionDelay'),
    // Browser capabilities
 isAndroid = (/android/gi).test(navigator.appVersion),
 isIDevice = (/iphone|ipad/gi).test(navigator.appVersion),
 isTouchPad = (/hp-tablet/gi).test(navigator.appVersion),
    isIE =  navigator.userAgent.indexOf("MSIE 8.0")>0?true:false,
    has3d = prefixStyle('perspective') in dummyStyle,
    hasTouch = 'ontouchstart' in window && !isTouchPad,
    hasTransform = !!vendor,
    hasTransitionEnd = prefixStyle('transition') in dummyStyle,
 RESIZE_EV = 'onorientationchange' in window ? 'orientationchange' : 'resize',
 START_EV = hasTouch ? 'touchstart' : 'mousedown',
 MOVE_EV = hasTouch ? 'touchmove' : 'mousemove',
 END_EV = hasTouch ? 'touchend' : 'mouseup',
 CANCEL_EV = hasTouch ? 'touchcancel' : 'mouseup',
 WHEEL_EV = vendor == 'Moz' ? 'DOMMouseScroll' : 'mousewheel',
 TRNEND_EV = (function () {
  if ( vendor === false ) return false;
  var transitionEnd = {
    ''   : 'transitionend',
    'webkit' : 'webkitTransitionEnd',
    'Moz'  : 'transitionend',
    'O'   : 'oTransitionEnd',
    'ms'  : 'MSTransitionEnd'
   };
  return transitionEnd[vendor];
 })(),
 nextFrame = (function() {
  return window.requestAnimationFrame ||
   window.webkitRequestAnimationFrame ||
   window.mozRequestAnimationFrame ||
   window.oRequestAnimationFrame ||
   window.msRequestAnimationFrame ||
   function(callback) { return setTimeout(callback, 1); };
 })(),
 cancelFrame = (function () {
  return window.cancelRequestAnimationFrame ||
   window.webkitCancelAnimationFrame ||
   window.webkitCancelRequestAnimationFrame ||
   window.mozCancelRequestAnimationFrame ||
   window.oCancelRequestAnimationFrame ||
   window.msCancelRequestAnimationFrame ||
   clearTimeout;
 })(),
 // Helpers
 translateZ = has3d ? ' translateZ(0)' : '',
 // Constructor
 iScroll = function (el, options) {
  var that = this,
   i,
   liNum;
  that.wrapper = typeof el == 'object' ? el : doc.getElementById(el);
  that.wrapper.style.overflow = 'hidden';
  that.scroller = that.wrapper.children[0];
  liNum = that.scroller.children[0].children.length;
  that.scroller.style.width = (that.wrapper.offsetWidth * liNum)+"px";
  // Default options
  that.options = {
   hScroll: true,
   vScroll: true,
   x: 0,
   y: 0,
   bounce: true,
   bounceLock: false,
   momentum: true,
   lockDirection: true,
   useTransform: true,
   useTransition: false,
   topOffset: 0,
   checkDOMChanges: false,  // Experimental
   handleClick: true,
   auto: false,
   // Scrollbar
   hScrollbar: true,
   vScrollbar: true,
   fixedScrollbar: isAndroid,
   hideScrollbar: isIDevice,
   fadeScrollbar: isIDevice && has3d,
   scrollbarClass: '',
   // Zoom
   zoom: false,
   zoomMin: 1,
   zoomMax: 4,
   doubleTapZoom: 2,
   wheelAction: 'scroll',
   // Snap
   snap: false,
   snapThreshold: 1,
   // Events
   onRefresh: null,
   onBeforeScrollStart: function (e) { e.preventDefault(); },
   onScrollStart: null,
   onBeforeScrollMove: null,
   onScrollMove: null,
   onBeforeScrollEnd: null,
   onScrollEnd: null,
   onTouchEnd: null,
   onDestroy: null,
   onZoomStart: null,
   onZoom: null,
   onZoomEnd: null
  };
  // User defined options
  for (i in options) that.options[i] = options[i];
  
  // Set starting position
  that.x = that.options.x;
  that.y = that.options.y;
  // Normalize options
  that.options.useTransform = hasTransform && that.options.useTransform;
  that.options.hScrollbar = that.options.hScroll && that.options.hScrollbar;
  that.options.vScrollbar = that.options.vScroll && that.options.vScrollbar;
  that.options.zoom = that.options.useTransform && that.options.zoom;
  that.options.useTransition = hasTransitionEnd && that.options.useTransition;
  // Helpers FIX ANDROID BUG!
  // translate3d and scale doesn't work together!
  // Ignoring 3d ONLY WHEN YOU SET that.options.zoom
  if ( that.options.zoom && isAndroid ){
   translateZ = '';
  }
  
  // Set some default styles
  that.scroller.style[transitionProperty] = that.options.useTransform ? cssVendor + 'transform' : 'top left';
  that.scroller.style[transitionDuration] = '0';
  that.scroller.style[transformOrigin] = '0 0';
  if (that.options.useTransition) that.scroller.style[transitionTimingFunction] = 'cubic-bezier(0.33,0.66,0.66,1)';
  
  if (that.options.useTransform) that.scroller.style[transform] = 'translate(' + that.x + 'px,' + that.y + 'px)' + translateZ;
  else that.scroller.style.cssText += ';position:absolute;top:' + that.y + 'px;left:' + that.x + 'px';
  if (that.options.useTransition) that.options.fixedScrollbar = true;
  that.refresh();
  that._bind(RESIZE_EV, window);
  that._bind(START_EV);
  if (!hasTouch) {
   that._bind('mouseout', that.wrapper);
   if (that.options.wheelAction != 'none')
    that._bind(WHEEL_EV);
  }
  if (that.options.checkDOMChanges) that.checkDOMTime = setInterval(function () {
   that._checkDOMChanges();
  }, 500);
  
  //add scrollevent roger
  if(that.options.auto) that.autoScroll = setInterval(function () {
   if(that.currPageX>=(liNum-1)){
    that.currPageX=0;
   }else{
    that.currPageX++;
   }
   that.scrollToPage(that.currPageX,that.currPageY);
  }, 2000);
 };
// Prototype
iScroll.prototype = {
 enabled: true,
 x: 0,
 y: 0,
 steps: [],
 scale: 1,
 currPageX: 0, currPageY: 0,
 pagesX: [], pagesY: [],
 aniTime: null,
 wheelZoomCount: 0,
 
 handleEvent: function (e) {
  var that = this;
  switch(e.type) {
   case START_EV:
    if (!hasTouch && e.button !== 0) return;
    that._start(e);
    break;
   case MOVE_EV: that._move(e); break;
   case END_EV:
   case CANCEL_EV: that._end(e); break;
   case RESIZE_EV: that._resize(); break;
   case WHEEL_EV: that._wheel(e); break;
   case 'mouseout': that._mouseout(e); break;
   case TRNEND_EV: that._transitionEnd(e); break;
  }
 },
 
 _checkDOMChanges: function () {
  if (this.moved || this.zoomed || this.animating ||
   (this.scrollerW == this.scroller.offsetWidth * this.scale && this.scrollerH == this.scroller.offsetHeight * this.scale)) return;
  this.refresh();
 },
 
 _scrollbar: function (dir) {
  var that = this,
   bar;
  if (!that[dir + 'Scrollbar']) {
   if (that[dir + 'ScrollbarWrapper']) {
    if (hasTransform) that[dir + 'ScrollbarIndicator'].style[transform] = '';
    that[dir + 'ScrollbarWrapper'].parentNode.removeChild(that[dir + 'ScrollbarWrapper']);
    that[dir + 'ScrollbarWrapper'] = null;
    that[dir + 'ScrollbarIndicator'] = null;
   }
   return;
  }
  if (!that[dir + 'ScrollbarWrapper']) {
   // Create the scrollbar wrapper
   bar = doc.createElement('div');
            bar.className = 'scrollbar';
   if (that.options.scrollbarClass) bar.className = that.options.scrollbarClass + dir.toUpperCase();
   else bar.style.cssText = 'position:absolute;z-index:100;' + (dir == 'h' ? 'height:7px;bottom:1px;left:2px;right:' + (that.vScrollbar ? '7' : '2') + 'px' : 'width:7px;bottom:' + (that.hScrollbar ? '7' : '2') + 'px;top:2px;right:1px');
   bar.style.cssText += ';pointer-events:none;' + cssVendor + 'transition-property:opacity;' + cssVendor + 'transition-duration:' + (that.options.fadeScrollbar ? '350ms' : '0') + ';overflow:hidden;opacity:' + (that.options.hideScrollbar ? '0' : '1');
   that.wrapper.appendChild(bar);
   that[dir + 'ScrollbarWrapper'] = bar;
   // Create the scrollbar indicator
   bar = doc.createElement('div');
   if (!that.options.scrollbarClass) {
    bar.style.cssText = 'position:absolute;z-index:100;background-color:rgba(0,0,0,0.5);border:1px solid rgba(255,255,255,0.9);' + cssVendor + 'background-clip:padding-box;' + cssVendor + 'box-sizing:border-box;' + (dir == 'h' ? 'height:100%' : 'width:100%') + ';' + cssVendor + 'border-radius:3px;border-radius:3px;';
   }
   bar.style.cssText += ';pointer-events:none;' + cssVendor + 'transition-property:' + cssVendor + 'transform;' + cssVendor + 'transition-timing-function:cubic-bezier(0.33,0.66,0.66,1);' + cssVendor + 'transition-duration:0;' + cssVendor + 'transform: translate(0,0)' + translateZ;
   if (that.options.useTransition) bar.style.cssText += ';' + cssVendor + 'transition-timing-function:cubic-bezier(0.33,0.66,0.66,1);';
   if(isIE){
    bar.style.backgroundColor = '#000';
    bar.style.filter = 'alpha(opacity=50)';
   }
   that[dir + 'ScrollbarWrapper'].appendChild(bar);
   that[dir + 'ScrollbarIndicator'] = bar;
  }
  if (dir == 'h') {
   that.hScrollbarSize = that.hScrollbarWrapper.clientWidth;
   that.hScrollbarIndicatorSize = m.max(m.round(that.hScrollbarSize * that.hScrollbarSize / that.scrollerW), 8);
   that.hScrollbarIndicator.style.width = that.hScrollbarIndicatorSize + 'px';
   that.hScrollbarMaxScroll = that.hScrollbarSize - that.hScrollbarIndicatorSize;
   that.hScrollbarProp = that.hScrollbarMaxScroll / that.maxScrollX;
  } else {
   that.vScrollbarSize = that.vScrollbarWrapper.clientHeight;
   that.vScrollbarIndicatorSize = m.max(m.round(that.vScrollbarSize * that.vScrollbarSize / that.scrollerH), 8);
   that.vScrollbarIndicator.style.height = that.vScrollbarIndicatorSize + 'px';
   that.vScrollbarMaxScroll = that.vScrollbarSize - that.vScrollbarIndicatorSize;
   that.vScrollbarProp = that.vScrollbarMaxScroll / that.maxScrollY;
  }
  // Reset position
  that._scrollbarPos(dir, true);
 },
 
 _resize: function () {
  var that = this;
  setTimeout(function () { that.refresh(); }, isAndroid ? 200 : 0);
 },
 
 _pos: function (x, y) {
  if (this.zoomed) return;
  x = this.hScroll ? x : 0;
  y = this.vScroll ? y : 0;
  if (this.options.useTransform) {
   this.scroller.style[transform] = 'translate(' + x + 'px,' + y + 'px) scale(' + this.scale + ')' + translateZ;
  } else {
   x = m.round(x);
   y = m.round(y);
   this.scroller.style.left = x + 'px';
   this.scroller.style.top = y + 'px';
  }
  this.x = x;
  this.y = y;
  this._scrollbarPos('h');
  this._scrollbarPos('v');
 },
    //判断是否滚动窗口
    _scrollWindow: function(){
        if(!this.vScroll&&this.absDistY>6){
            var toScroll = 0;
            if(this.distY>0){
                toScroll = document.documentElement.scrollTop - this.absDistY;
                if(toScroll<0) toScroll = 0;
            }else{
                toScroll = document.documentElement.scrollTop + this.absDistY;
                if(toScroll>document.body.scrollHeight) toScroll = document.body.scrollHeight;
            }
            window.scrollTo(0,toScroll);
        }
    },
 _scrollbarPos: function (dir, hidden) {
  var that = this,
   pos = dir == 'h' ? that.x : that.y,
   size;
  if (!that[dir + 'Scrollbar']) return;
  pos = that[dir + 'ScrollbarProp'] * pos;
  if (pos < 0) {
   if (!that.options.fixedScrollbar) {
    size = that[dir + 'ScrollbarIndicatorSize'] + m.round(pos * 3);
    if (size < 8) size = 8;
    that[dir + 'ScrollbarIndicator'].style[dir == 'h' ? 'width' : 'height'] = size + 'px';
   }
   pos = 0;
  } else if (pos > that[dir + 'ScrollbarMaxScroll']) {
   if (!that.options.fixedScrollbar) {
    size = that[dir + 'ScrollbarIndicatorSize'] - m.round((pos - that[dir + 'ScrollbarMaxScroll']) * 3);
    if (size < 8) size = 8;
    that[dir + 'ScrollbarIndicator'].style[dir == 'h' ? 'width' : 'height'] = size + 'px';
    pos = that[dir + 'ScrollbarMaxScroll'] + (that[dir + 'ScrollbarIndicatorSize'] - size);
   } else {
    pos = that[dir + 'ScrollbarMaxScroll'];
   }
  }
  that[dir + 'ScrollbarWrapper'].style[transitionDelay] = '0';
  that[dir + 'ScrollbarWrapper'].style.opacity = hidden && that.options.hideScrollbar ? '0' : '1';
  that[dir + 'ScrollbarIndicator'].style[transform] = 'translate(' + (dir == 'h' ? pos + 'px,0)' : '0,' + pos + 'px)') + translateZ;
  if(isIE){
   if(dir =='h'){
    that[dir + 'ScrollbarIndicator'].style.left = pos + 'px';
    that[dir + 'ScrollbarIndicator'].style.top = '0px';
   }else{
    that[dir + 'ScrollbarIndicator'].style.left = '0px';
    that[dir + 'ScrollbarIndicator'].style.top = pos + 'px';
   }
  }
 },
 
 _start: function (e) {
  var that = this,
   point = hasTouch ? e.touches[0] : e,
   matrix, x, y,
   c1, c2;
  //add scrollevent roger
  if (that.options.auto) clearInterval(that.autoScroll);
  
  if (!that.enabled) return;
  if (that.options.onBeforeScrollStart) that.options.onBeforeScrollStart.call(that, e);
  if (that.options.useTransition || that.options.zoom) that._transitionTime(0);
  that.moved = false;
  that.animating = false;
  that.zoomed = false;
  that.distX = 0;
  that.distY = 0;
  that.absDistX = 0;
  that.absDistY = 0;
  that.dirX = 0;
  that.dirY = 0;
  // Gesture start
  if (that.options.zoom && hasTouch && e.touches.length > 1) {
   c1 = m.abs(e.touches[0].pageX-e.touches[1].pageX);
   c2 = m.abs(e.touches[0].pageY-e.touches[1].pageY);
   that.touchesDistStart = m.sqrt(c1 * c1 + c2 * c2);
   that.originX = m.abs(e.touches[0].pageX + e.touches[1].pageX - that.wrapperOffsetLeft * 2) / 2 - that.x;
   that.originY = m.abs(e.touches[0].pageY + e.touches[1].pageY - that.wrapperOffsetTop * 2) / 2 - that.y;
   if (that.options.onZoomStart) that.options.onZoomStart.call(that, e);
  }
  if (that.options.momentum) {
   if (that.options.useTransform) {
    // Very lame general purpose alternative to CSSMatrix
    matrix = getComputedStyle(that.scroller, null)[transform].replace(/[^0-9\-.,]/g, '').split(',');
    x = matrix[4] * 1;
    y = matrix[5] * 1;
   } else {
    x = getComputedStyle(that.scroller, null).left.replace(/[^0-9-]/g, '') * 1;
    y = getComputedStyle(that.scroller, null).top.replace(/[^0-9-]/g, '') * 1;
   }
   
   if (x != that.x || y != that.y) {
    if (that.options.useTransition) that._unbind(TRNEND_EV);
    else cancelFrame(that.aniTime);
    that.steps = [];
    that._pos(x, y);
   }
  }
  that.absStartX = that.x; // Needed by snap threshold
  that.absStartY = that.y;
  that.startX = that.x;
  that.startY = that.y;
  that.pointX = point.pageX;
  that.pointY = point.pageY;
  that.startTime = e.timeStamp || Date.now();
  if (that.options.onScrollStart) that.options.onScrollStart.call(that, e);
  that._bind(MOVE_EV);
  that._bind(END_EV);
  that._bind(CANCEL_EV);
 },
 
 _move: function (e) {
  var that = this,
   point = hasTouch ? e.touches[0] : e,
   deltaX = point.pageX - that.pointX,
   deltaY = point.pageY - that.pointY,
   newX = that.x + deltaX,
   newY = that.y + deltaY,
   c1, c2, scale,
   timestamp = e.timeStamp || Date.now();
  if (that.options.onBeforeScrollMove) that.options.onBeforeScrollMove.call(that, e);
  // Zoom
  if (that.options.zoom && hasTouch && e.touches.length > 1) {
   c1 = m.abs(e.touches[0].pageX - e.touches[1].pageX);
   c2 = m.abs(e.touches[0].pageY - e.touches[1].pageY);
   that.touchesDist = m.sqrt(c1*c1+c2*c2);
   that.zoomed = true;
   scale = 1 / that.touchesDistStart * that.touchesDist * this.scale;
   if (scale < that.options.zoomMin) scale = 0.5 * that.options.zoomMin * Math.pow(2.0, scale / that.options.zoomMin);
   else if (scale > that.options.zoomMax) scale = 2.0 * that.options.zoomMax * Math.pow(0.5, that.options.zoomMax / scale);
   that.lastScale = scale / this.scale;
   newX = this.originX - this.originX * that.lastScale + this.x,
   newY = this.originY - this.originY * that.lastScale + this.y;
   this.scroller.style[transform] = 'translate(' + newX + 'px,' + newY + 'px) scale(' + scale + ')' + translateZ;
   if (that.options.onZoom) that.options.onZoom.call(that, e);
   return;
  }
  that.pointX = point.pageX;
  that.pointY = point.pageY;
  // Slow down if outside of the boundaries
  if (newX > 0 || newX < that.maxScrollX) {
   newX = that.options.bounce ? that.x + (deltaX / 2) : newX >= 0 || that.maxScrollX >= 0 ? 0 : that.maxScrollX;
  }
  if (newY > that.minScrollY || newY < that.maxScrollY) {
   newY = that.options.bounce ? that.y + (deltaY / 2) : newY >= that.minScrollY || that.maxScrollY >= 0 ? that.minScrollY : that.maxScrollY;
  }
  that.distX += deltaX;
  that.distY += deltaY;
  that.absDistX = m.abs(that.distX);
  that.absDistY = m.abs(that.distY);
  if (that.absDistX < 6 && that.absDistY < 6) {
   return;
  }
  // Lock direction
  if (that.options.lockDirection) {
   if (that.absDistX > that.absDistY + 5) {
    newY = that.y;
    deltaY = 0;
   } else if (that.absDistY > that.absDistX + 5) {
    newX = that.x;
    deltaX = 0;
   }
  }
  that.moved = true;
  that._pos(newX, newY);
  that.dirX = deltaX > 0 ? -1 : deltaX < 0 ? 1 : 0;
  that.dirY = deltaY > 0 ? -1 : deltaY < 0 ? 1 : 0;
  if (timestamp - that.startTime > 300) {
   that.startTime = timestamp;
   that.startX = that.x;
   that.startY = that.y;
  }
  
  if (that.options.onScrollMove) that.options.onScrollMove.call(that, e);
 },
 
 _end: function (e) {
        this._scrollWindow();
  if (hasTouch && e.touches.length !== 0) return;
  var that = this,
   point = hasTouch ? e.changedTouches[0] : e,
   target, ev,
   momentumX = { dist:0, time:0 },
   momentumY = { dist:0, time:0 },
   duration = (e.timeStamp || Date.now()) - that.startTime,
   newPosX = that.x,
   newPosY = that.y,
   distX, distY,
   newDuration,
   snap,
   scale;
  that._unbind(MOVE_EV);
  that._unbind(END_EV);
  that._unbind(CANCEL_EV);
  if (that.options.onBeforeScrollEnd) that.options.onBeforeScrollEnd.call(that, e);
  if (that.zoomed) {
   scale = that.scale * that.lastScale;
   scale = Math.max(that.options.zoomMin, scale);
   scale = Math.min(that.options.zoomMax, scale);
   that.lastScale = scale / that.scale;
   that.scale = scale;
   that.x = that.originX - that.originX * that.lastScale + that.x;
   that.y = that.originY - that.originY * that.lastScale + that.y;
   
   that.scroller.style[transitionDuration] = '200ms';
   that.scroller.style[transform] = 'translate(' + that.x + 'px,' + that.y + 'px) scale(' + that.scale + ')' + translateZ;
   
   that.zoomed = false;
   that.refresh();
   if (that.options.onZoomEnd) that.options.onZoomEnd.call(that, e);
   return;
  }
  if (!that.moved) {
   if (hasTouch) {
    if (that.doubleTapTimer && that.options.zoom) {
     // Double tapped
     clearTimeout(that.doubleTapTimer);
     that.doubleTapTimer = null;
     if (that.options.onZoomStart) that.options.onZoomStart.call(that, e);
     that.zoom(that.pointX, that.pointY, that.scale == 1 ? that.options.doubleTapZoom : 1);
     if (that.options.onZoomEnd) {
      setTimeout(function() {
       that.options.onZoomEnd.call(that, e);
      }, 200); // 200 is default zoom duration
     }
    } else if (this.options.handleClick) {
     that.doubleTapTimer = setTimeout(function () {
      that.doubleTapTimer = null;
      // Find the last touched element
      target = point.target;
      while (target.nodeType != 1) target = target.parentNode;
      if (target.tagName != 'SELECT' && target.tagName != 'INPUT' && target.tagName != 'TEXTAREA') {
       ev = doc.createEvent('MouseEvents');
       ev.initMouseEvent('click', true, true, e.view, 1,
        point.screenX, point.screenY, point.clientX, point.clientY,
        e.ctrlKey, e.altKey, e.shiftKey, e.metaKey,
        0, null);
       ev._fake = true;
       target.dispatchEvent(ev);
      }
     }, that.options.zoom ? 250 : 0);
    }
   }
   that._resetPos(200);
   if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);
   return;
  }
  if (duration < 300 && that.options.momentum) {
   momentumX = newPosX ? that._momentum(newPosX - that.startX, duration, -that.x, that.scrollerW - that.wrapperW + that.x, that.options.bounce ? that.wrapperW : 0) : momentumX;
   momentumY = newPosY ? that._momentum(newPosY - that.startY, duration, -that.y, (that.maxScrollY < 0 ? that.scrollerH - that.wrapperH + that.y - that.minScrollY : 0), that.options.bounce ? that.wrapperH : 0) : momentumY;
   newPosX = that.x + momentumX.dist;
   newPosY = that.y + momentumY.dist;
   if ((that.x > 0 && newPosX > 0) || (that.x < that.maxScrollX && newPosX < that.maxScrollX)) momentumX = { dist:0, time:0 };
   if ((that.y > that.minScrollY && newPosY > that.minScrollY) || (that.y < that.maxScrollY && newPosY < that.maxScrollY)) momentumY = { dist:0, time:0 };
  }
  if (momentumX.dist || momentumY.dist) {
   newDuration = m.max(m.max(momentumX.time, momentumY.time), 10);
   // Do we need to snap?
   if (that.options.snap) {
    distX = newPosX - that.absStartX;
    distY = newPosY - that.absStartY;
    if (m.abs(distX) < that.options.snapThreshold && m.abs(distY) < that.options.snapThreshold) { that.scrollTo(that.absStartX, that.absStartY, 200); }
    else {
     snap = that._snap(newPosX, newPosY);
     newPosX = snap.x;
     newPosY = snap.y;
     newDuration = m.max(snap.time, newDuration);
    }
   }
   that.scrollTo(m.round(newPosX), m.round(newPosY), newDuration);
   if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);
   return;
  }
  // Do we need to snap?
  if (that.options.snap) {
   distX = newPosX - that.absStartX;
   distY = newPosY - that.absStartY;
   if (m.abs(distX) < that.options.snapThreshold && m.abs(distY) < that.options.snapThreshold) that.scrollTo(that.absStartX, that.absStartY, 200);
   else {
    snap = that._snap(that.x, that.y);
    if (snap.x != that.x || snap.y != that.y) that.scrollTo(snap.x, snap.y, snap.time);
   }
   if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);
   return;
  }
  that._resetPos(200);
  if (that.options.onTouchEnd) that.options.onTouchEnd.call(that, e);
 },
 
 _resetPos: function (time) {
  var that = this,
   resetX = that.x >= 0 ? 0 : that.x < that.maxScrollX ? that.maxScrollX : that.x,
   resetY = that.y >= that.minScrollY || that.maxScrollY > 0 ? that.minScrollY : that.y < that.maxScrollY ? that.maxScrollY : that.y;
  if (resetX == that.x && resetY == that.y) {
   if (that.moved) {
    that.moved = false;
    if (that.options.onScrollEnd) that.options.onScrollEnd.call(that);  // Execute custom code on scroll end
   }
   if (that.hScrollbar && that.options.hideScrollbar) {
    if (vendor == 'webkit') that.hScrollbarWrapper.style[transitionDelay] = '300ms';
    that.hScrollbarWrapper.style.opacity = '0';
   }
   if (that.vScrollbar && that.options.hideScrollbar) {
    if (vendor == 'webkit') that.vScrollbarWrapper.style[transitionDelay] = '300ms';
    that.vScrollbarWrapper.style.opacity = '0';
   }
   return;
  }
  that.scrollTo(resetX, resetY, time || 0);
 },
 _wheel: function (e) {
  var that = this,
   wheelDeltaX, wheelDeltaY,
   deltaX, deltaY,
   deltaScale;
  if ('wheelDeltaX' in e) {
   wheelDeltaX = e.wheelDeltaX / 12;
   wheelDeltaY = e.wheelDeltaY / 12;
  } else if('wheelDelta' in e) {
   wheelDeltaX = wheelDeltaY = e.wheelDelta / 12;
  } else if ('detail' in e) {
   wheelDeltaX = wheelDeltaY = -e.detail * 3;
  } else {
   return;
  }
  
  if (that.options.wheelAction == 'zoom') {
   deltaScale = that.scale * Math.pow(2, 1/3 * (wheelDeltaY ? wheelDeltaY / Math.abs(wheelDeltaY) : 0));
   if (deltaScale < that.options.zoomMin) deltaScale = that.options.zoomMin;
   if (deltaScale > that.options.zoomMax) deltaScale = that.options.zoomMax;
   
   if (deltaScale != that.scale) {
    if (!that.wheelZoomCount && that.options.onZoomStart) that.options.onZoomStart.call(that, e);
    that.wheelZoomCount++;
    
    that.zoom(e.pageX, e.pageY, deltaScale, 400);
    
    setTimeout(function() {
     that.wheelZoomCount--;
     if (!that.wheelZoomCount && that.options.onZoomEnd) that.options.onZoomEnd.call(that, e);
    }, 400);
   }
   
   return;
  }
  
  deltaX = that.x + wheelDeltaX;
  deltaY = that.y + wheelDeltaY;
  if (deltaX > 0) deltaX = 0;
  else if (deltaX < that.maxScrollX) deltaX = that.maxScrollX;
  if (deltaY > that.minScrollY) deltaY = that.minScrollY;
  else if (deltaY < that.maxScrollY) deltaY = that.maxScrollY;
    
  if (that.maxScrollY < 0) {
   that.scrollTo(deltaX, deltaY, 0);
  }
 },
 
 _mouseout: function (e) {
  var t = e.relatedTarget;
  if (!t) {
   this._end(e);
   return;
  }
  while (t = t.parentNode) if (t == this.wrapper) return;
  
  this._end(e);
 },
 _transitionEnd: function (e) {
  var that = this;
  if (e.target != that.scroller) return;
  that._unbind(TRNEND_EV);
  
  that._startAni();
 },

 /**
 *
 * Utilities
 *
 */
 _startAni: function () {
  var that = this,
   startX = that.x, startY = that.y,
   startTime = Date.now(),
   step, easeOut,
   animate;
  if (that.animating) return;
  
  if (!that.steps.length) {
   that._resetPos(400);
   return;
  }
  
  step = that.steps.shift();
  
  if (step.x == startX && step.y == startY) step.time = 0;
  that.animating = true;
  that.moved = true;
  
  if (that.options.useTransition) {
   that._transitionTime(step.time);
   that._pos(step.x, step.y);
   that.animating = false;
   if (step.time) that._bind(TRNEND_EV);
   else that._resetPos(0);
   return;
  }
  animate = function () {
   var now = Date.now(),
    newX, newY;
   if (now >= startTime + step.time) {
    that._pos(step.x, step.y);
    that.animating = false;
    if (that.options.onAnimationEnd) that.options.onAnimationEnd.call(that);   // Execute custom code on animation end
    that._startAni();
    return;
   }
   now = (now - startTime) / step.time - 1;
   easeOut = m.sqrt(1 - now * now);
   newX = (step.x - startX) * easeOut + startX;
   newY = (step.y - startY) * easeOut + startY;
   that._pos(newX, newY);
   if (that.animating) that.aniTime = nextFrame(animate);
  };
  animate();
 },
 _transitionTime: function (time) {
  time += 'ms';
  this.scroller.style[transitionDuration] = time;
  if (this.hScrollbar) this.hScrollbarIndicator.style[transitionDuration] = time;
  if (this.vScrollbar) this.vScrollbarIndicator.style[transitionDuration] = time;
 },
 _momentum: function (dist, time, maxDistUpper, maxDistLower, size) {
  var deceleration = 0.0006,
   speed = m.abs(dist) / time,
   newDist = (speed * speed) / (2 * deceleration),
   newTime = 0, outsideDist = 0;
  // Proportinally reduce speed if we are outside of the boundaries
  if (dist > 0 && newDist > maxDistUpper) {
   outsideDist = size / (6 / (newDist / speed * deceleration));
   maxDistUpper = maxDistUpper + outsideDist;
   speed = speed * maxDistUpper / newDist;
   newDist = maxDistUpper;
  } else if (dist < 0 && newDist > maxDistLower) {
   outsideDist = size / (6 / (newDist / speed * deceleration));
   maxDistLower = maxDistLower + outsideDist;
   speed = speed * maxDistLower / newDist;
   newDist = maxDistLower;
  }
  newDist = newDist * (dist < 0 ? -1 : 1);
  newTime = speed / deceleration;
  return { dist: newDist, time: m.round(newTime) };
 },
 _offset: function (el) {
  var left = -el.offsetLeft,
   top = -el.offsetTop;
   
  while (el = el.offsetParent) {
   left -= el.offsetLeft;
   top -= el.offsetTop;
  }
  
  if (el != this.wrapper) {
   left *= this.scale;
   top *= this.scale;
  }
  return { left: left, top: top };
 },
 _snap: function (x, y) {
  var that = this,
   i, l,
   page, time,
   sizeX, sizeY;
  // Check page X
  page = that.pagesX.length - 1;
  for (i=0, l=that.pagesX.length; i<l; i++) {
   if (x >= that.pagesX[i]) {
    page = i;
    break;
   }
  }
  if (page == that.currPageX && page > 0 && that.dirX < 0) page--;
  x = that.pagesX[page];
  sizeX = m.abs(x - that.pagesX[that.currPageX]);
  sizeX = sizeX ? m.abs(that.x - x) / sizeX * 500 : 0;
  that.currPageX = page;
  // Check page Y
  page = that.pagesY.length-1;
  for (i=0; i<page; i++) {
   if (y >= that.pagesY[i]) {
    page = i;
    break;
   }
  }
  if (page == that.currPageY && page > 0 && that.dirY < 0) page--;
  y = that.pagesY[page];
  sizeY = m.abs(y - that.pagesY[that.currPageY]);
  sizeY = sizeY ? m.abs(that.y - y) / sizeY * 500 : 0;
  that.currPageY = page;
  // Snap with constant speed (proportional duration)
  time = m.round(m.max(sizeX, sizeY)) || 200;
  return { x: x, y: y, time: time };
 },
 _bind: function (type, el, bubble) {
     var obj = (el || this.scroller);
  if (obj.addEventListener){
   obj.addEventListener(type, this, !!bubble);
  } else if (obj.attachEvent){
   obj.attachEvent("on"+type, this);
  }
 },
 _unbind: function (type, el, bubble) {
  var obj = (el || this.scroller);
  if (obj.addEventListener){
   obj.removeEventListener(type, this, !!bubble);
  } else if (obj.attachEvent){
   obj.detachEvent("on"+type, this);
  }
 },

 /**
 *
 * Public methods
 *
 */
 destroy: function () {
  var that = this;
  that.scroller.style[transform] = '';
  // Remove the scrollbars
  that.hScrollbar = false;
  that.vScrollbar = false;
  that._scrollbar('h');
  that._scrollbar('v');
  // Remove the event listeners
  that._unbind(RESIZE_EV, window);
  that._unbind(START_EV);
  that._unbind(MOVE_EV);
  that._unbind(END_EV);
  that._unbind(CANCEL_EV);
  
  if (!that.options.hasTouch) {
   that._unbind('mouseout', that.wrapper);
   that._unbind(WHEEL_EV);
  }
  
  if (that.options.useTransition) that._unbind(TRNEND_EV);
  
  if (that.options.checkDOMChanges) clearInterval(that.checkDOMTime);
  
  //add scrollevent roger
  if (that.options.auto) clearInterval(that.autoScroll);
  
  if (that.options.onDestroy) that.options.onDestroy.call(that);
 },
 refresh: function () {
  var that = this,
   offset,
   i, l,
   els,
   pos = 0,
   page = 0;
  if (that.scale < that.options.zoomMin) that.scale = that.options.zoomMin;
  that.wrapperW = that.wrapper.clientWidth || 1;
  that.wrapperH = that.wrapper.clientHeight || 1;
  that.minScrollY = -that.options.topOffset || 0;
  that.scrollerW = m.round(that.scroller.offsetWidth * that.scale);
  that.scrollerH = m.round((that.scroller.offsetHeight + that.minScrollY) * that.scale);
  that.maxScrollX = that.wrapperW - that.scrollerW;
  that.maxScrollY = that.wrapperH - that.scrollerH + that.minScrollY;
  that.dirX = 0;
  that.dirY = 0;
  if (that.options.onRefresh) that.options.onRefresh.call(that);
  that.hScroll = that.options.hScroll && that.maxScrollX < 0;
  that.vScroll = that.options.vScroll && (!that.options.bounceLock && !that.hScroll || that.scrollerH > that.wrapperH);
  that.hScrollbar = that.hScroll && that.options.hScrollbar;
  that.vScrollbar = that.vScroll && that.options.vScrollbar && that.scrollerH > that.wrapperH;
  offset = that._offset(that.wrapper);
  that.wrapperOffsetLeft = -offset.left;
  that.wrapperOffsetTop = -offset.top;
  // Prepare snap
  if (typeof that.options.snap == 'string') {
   that.pagesX = [];
   that.pagesY = [];
   els = that.scroller.querySelectorAll(that.options.snap);
   for (i=0, l=els.length; i<l; i++) {
    pos = that._offset(els[i]);
    pos.left += that.wrapperOffsetLeft;
    pos.top += that.wrapperOffsetTop;
    that.pagesX[i] = pos.left < that.maxScrollX ? that.maxScrollX : pos.left * that.scale;
    that.pagesY[i] = pos.top < that.maxScrollY ? that.maxScrollY : pos.top * that.scale;
   }
  } else if (that.options.snap) {
   that.pagesX = [];
   while (pos >= that.maxScrollX) {
    that.pagesX[page] = pos;
    pos = pos - that.wrapperW;
    page++;
   }
   if (that.maxScrollX%that.wrapperW) that.pagesX[that.pagesX.length] = that.maxScrollX - that.pagesX[that.pagesX.length-1] + that.pagesX[that.pagesX.length-1];
   pos = 0;
   page = 0;
   that.pagesY = [];
   while (pos >= that.maxScrollY) {
    that.pagesY[page] = pos;
    pos = pos - that.wrapperH;
    page++;
   }
   if (that.maxScrollY%that.wrapperH) that.pagesY[that.pagesY.length] = that.maxScrollY - that.pagesY[that.pagesY.length-1] + that.pagesY[that.pagesY.length-1];
  }
  // Prepare the scrollbars
  that._scrollbar('h');
  that._scrollbar('v');
  if (!that.zoomed) {
   that.scroller.style[transitionDuration] = '0';
   that._resetPos(200);
  }
 },
 scrollTo: function (x, y, time, relative) {
  var that = this,
   step = x,
   i, l;
  that.stop();
  if (!step.length) step = [{ x: x, y: y, time: time, relative: relative }];
  
  for (i=0, l=step.length; i<l; i++) {
   if (step[i].relative) { step[i].x = that.x - step[i].x; step[i].y = that.y - step[i].y; }
   that.steps.push({ x: step[i].x, y: step[i].y, time: step[i].time || 0 });
  }
  that._startAni();
 },
 scrollToElement: function (el, time) {
  var that = this, pos;
  el = el.nodeType ? el : that.scroller.querySelector(el);
  if (!el) return;
  pos = that._offset(el);
  pos.left += that.wrapperOffsetLeft;
  pos.top += that.wrapperOffsetTop;
  pos.left = pos.left > 0 ? 0 : pos.left < that.maxScrollX ? that.maxScrollX : pos.left;
  pos.top = pos.top > that.minScrollY ? that.minScrollY : pos.top < that.maxScrollY ? that.maxScrollY : pos.top;
  time = time === undefined ? m.max(m.abs(pos.left)*2, m.abs(pos.top)*2) : time;
  that.scrollTo(pos.left, pos.top, time);
 },
 scrollToPage: function (pageX, pageY, time) {
  var that = this, x, y;
  
  time = time === undefined ? 400 : time;
  if (that.options.onScrollStart) that.options.onScrollStart.call(that);
  if (that.options.snap) {
   pageX = pageX == 'next' ? that.currPageX+1 : pageX == 'prev' ? that.currPageX-1 : pageX;
   pageY = pageY == 'next' ? that.currPageY+1 : pageY == 'prev' ? that.currPageY-1 : pageY;
   pageX = pageX < 0 ? 0 : pageX > that.pagesX.length-1 ? that.pagesX.length-1 : pageX;
   pageY = pageY < 0 ? 0 : pageY > that.pagesY.length-1 ? that.pagesY.length-1 : pageY;
   that.currPageX = pageX;
   that.currPageY = pageY;
   x = that.pagesX[pageX];
   y = that.pagesY[pageY];
  } else {
   x = -that.wrapperW * pageX;
   y = -that.wrapperH * pageY;
   if (x < that.maxScrollX) x = that.maxScrollX;
   if (y < that.maxScrollY) y = that.maxScrollY;
  }
  that.scrollTo(x, y, time);
 },
 disable: function () {
  this.stop();
  this._resetPos(0);
  this.enabled = false;
  // If disabled after touchstart we make sure that there are no left over events
  this._unbind(MOVE_EV);
  this._unbind(END_EV);
  this._unbind(CANCEL_EV);
 },
 
 enable: function () {
  this.enabled = true;
 },
 
 stop: function () {
  if (this.options.useTransition) this._unbind(TRNEND_EV);
  else cancelFrame(this.aniTime);
  this.steps = [];
  this.moved = false;
  this.animating = false;
 },
 
 zoom: function (x, y, scale, time) {
  var that = this,
   relScale = scale / that.scale;
  if (!that.options.useTransform) return;
  that.zoomed = true;
  time = time === undefined ? 200 : time;
  x = x - that.wrapperOffsetLeft - that.x;
  y = y - that.wrapperOffsetTop - that.y;
  that.x = x - x * relScale + that.x;
  that.y = y - y * relScale + that.y;
  that.scale = scale;
  that.refresh();
  that.x = that.x > 0 ? 0 : that.x < that.maxScrollX ? that.maxScrollX : that.x;
  that.y = that.y > that.minScrollY ? that.minScrollY : that.y < that.maxScrollY ? that.maxScrollY : that.y;
  that.scroller.style[transitionDuration] = time + 'ms';
  that.scroller.style[transform] = 'translate(' + that.x + 'px,' + that.y + 'px) scale(' + scale + ')' + translateZ;
  that.zoomed = false;
 },
 
 isReady: function () {
  return !this.moved && !this.zoomed && !this.animating;
 }
};
function prefixStyle (style) {
 if ( vendor === '' ) return style;
 style = style.charAt(0).toUpperCase() + style.substr(1);
 return vendor + style;
}
dummyStyle = null; // for the sake of it
if (typeof exports !== 'undefined') exports.iScroll = iScroll;
else window.iScroll = iScroll;
Date.now = function(){
 return (new Date()).getTime();
}
})(this, document);

用于测试的HTML代码块：

<!--图片组模块-->
<div id="images" class="images" module="4">
  <div style="overflow:hidden; width:320px; height:140px;" id="wrapper" class="myFocus" >
	<div class="pic">
	  <ul>
	    <li ><a href="#"><img src="css/template/banner_01.jpg" /></a></li>
             <li ><a href="#"><img src="css/template/banner_02.jpg" /></a></li>
             <li ><a href="#"><img src="css/template/banner_03.jpg" /></a></li>
             <li ><a href="#"><img src="css/template/banner_04.jpg" /></a></li>
	  </ul>
	</div>
  </div>
</div>

CSS:

.images { width:100%; padding:0; position:relative;height: 140px;}
.images .myFocus {width:318px; height:140px; float:left; position:relative; z-index:1; overflow:hidden; background:#aaa; -webkit-border-radius:10px; -moz-border-radius:10px;-o-border-radius:10px; border-radius:10px; background:#ccc;}
.images .myFocus .pic{ height:100%; padding:0;}
.images .myFocus .pic ul{list-style:none; display:block; float:left; width:100%; height:100%;	padding:0;	margin:0; text-align:left;}
.images .myFocus .pic li{-webkit-box-sizing:border-box; -moz-box-sizing:border-box; -o-box-sizing:border-box;box-sizing:border-box;	display:block;float:left;width:318px;height:140px; text-align:center; font-size:18px;line-height:140%;}
.images .myFocus img{ margin:0; padding:0; border:0;width:318px; height:140px;}

 

初始化JS

new iScroll('wrapper', {
			snap: true,
			momentum: false,
			hScrollbar: true,
			auto: true
	    });

 

iScroll各个参数的意义

hScroll               false 禁止横向滚动 true横向滚动 默认为true
vScroll               false 精致垂直滚动 true垂直滚动 默认为true
hScrollbar          false隐藏水平方向上的滚动条
vScrollbar          false 隐藏垂直方向上的滚动条
fixedScrollbar    在iOS系统上，当元素拖动超出了scroller的边界时，滚动条会收缩，设置为true可以禁止滚动条超出scroller的可见区域。默认在Android上为true， iOS上为false
fadeScrollbar    false 指定在无渐隐效果时隐藏滚动

hideScrollbar    在没有用户交互时隐藏滚动条 默认为true
bounce              启用或禁用边界的反弹，默认为true

momentum       启用或禁用惯性，默认为true，此参数在你想要保存资源的时候非常有用
lockDirection    false取消拖动方向的锁定， true拖动只能在一个方向上（up/down 或者left/right）

auto                 自定义的一个属性，用来设定是否自动滚动，默认为false