可以实现手势操作：拖动、缩放、旋转。封装好的脚本方法是这样的：

var cat = window.cat || {};  cat.touchjs = {      left: 0,      top: 0,      scaleVal: 1,    //缩放      rotateVal: 0,   //旋转      curStatus: 0,   //记录当前手势的状态, 0:拖动, 1:缩放, 2:旋转      //初始化      init: function ($targetObj, callback) {          touch.on($targetObj, 'touchstart', function (ev) {              cat.touchjs.curStatus = 0;              ev.preventDefault();//阻止默认事件          });          if (!window.localStorage.cat_touchjs_data)              callback(0, 0, 1, 0);          else {              var jsonObj = JSON.parse(window.localStorage.cat_touchjs_data);              cat.touchjs.left = parseFloat(jsonObj.left), cat.touchjs.top = parseFloat(jsonObj.top), cat.touchjs.scaleVal = parseFloat(jsonObj.scale), cat.touchjs.rotateVal = parseFloat(jsonObj.rotate);              callback(cat.touchjs.left, cat.touchjs.top, cat.touchjs.scaleVal, cat.touchjs.rotateVal);          }      },      //拖动      drag: function ($targetObj, callback) {          touch.on($targetObj, 'drag', function (ev) {              $targetObj.css("left", cat.touchjs.left + ev.x).css("top", cat.touchjs.top + ev.y);          });          touch.on($targetObj, 'dragend', function (ev) {              cat.touchjs.left = cat.touchjs.left + ev.x;              cat.touchjs.top = cat.touchjs.top + ev.y;              callback(cat.touchjs.left, cat.touchjs.top);          });      },      //缩放      scale: function ($targetObj, callback) {          var initialScale = cat.touchjs.scaleVal || 1;          var currentScale;          touch.on($targetObj, 'pinch', function (ev) {              if (cat.touchjs.curStatus == 2) {                  return;              }              cat.touchjs.curStatus = 1;              currentScale = ev.scale - 1;              currentScale = initialScale + currentScale;              cat.touchjs.scaleVal = currentScale;              var transformStyle = 'scale(' + cat.touchjs.scaleVal + ') rotate(' + cat.touchjs.rotateVal + 'deg)';              $targetObj.css("transform", transformStyle).css("-webkit-transform", transformStyle);              callback(cat.touchjs.scaleVal);          });            touch.on($targetObj, 'pinchend', function (ev) {              if (cat.touchjs.curStatus == 2) {                  return;              }              initialScale = currentScale;              cat.touchjs.scaleVal = currentScale;              callback(cat.touchjs.scaleVal);          });      },      //旋转      rotate: function ($targetObj, callback) {          var angle = cat.touchjs.rotateVal || 0;          touch.on($targetObj, 'rotate', function (ev) {              if (cat.touchjs.curStatus == 1) {                  return;              }              cat.touchjs.curStatus = 2;              var totalAngle = angle + ev.rotation;              if (ev.fingerStatus === 'end') {                  angle = angle + ev.rotation;              }              cat.touchjs.rotateVal = totalAngle;              var transformStyle = 'scale(' + cat.touchjs.scaleVal + ') rotate(' + cat.touchjs.rotateVal + 'deg)';              $targetObj.css("transform", transformStyle).css("-webkit-transform", transformStyle);              $targetObj.attr('data-rotate', cat.touchjs.rotateVal);              callback(cat.touchjs.rotateVal);          });      }  };

html代码：

js调用：

var $targetObj = $('#targetObj');  //初始化设置  cat.touchjs.init($targetObj, function (left, top, scale, rotate) {};  //初始化拖动手势（不需要就注释掉）  cat.touchjs.drag($targetObj, function (left, top) { });  //初始化缩放手势（不需要就注释掉）  cat.touchjs.scale($targetObj, function (scale) { });  //初始化旋转手势（不需要就注释掉）  cat.touchjs.rotate($targetObj, function (rotate) { });

touch官网地址：