详解mpvue scroll-view自动回弹bug解决方案

function calcDiff(holder, key, newObj, oldObj) { if (newObj === oldObj || newObj === undefined) {  return } if (newObj == null || oldObj == null || typeof newObj !== typeof oldObj) {  holder[key] = newObj } else if (Array.isArray(newObj) && Array.isArray(oldObj)) {  if (newObj.length === oldObj.length) {   for (var i = 0, len = newObj.length; i < len; ++i) {    calcDiff(holder, key + '[' + i + ']', newObj[i], oldObj[i])   }  } else {   holder[key] = newObj  } } else if (typeof newObj === 'object' && typeof oldObj === 'object') {  var newKeys = Object.keys(newObj)  var oldKeys = Object.keys(oldObj)  if (newKeys.length !== oldKeys.length) {   holder[key] = newObj  } else {   var allKeysSet = Object.create(null)   for (var i = 0, len = newKeys.length; i < len; ++i) {    allKeysSet[newKeys[i]] = true    allKeysSet[oldKeys[i]] = true   }   if (Object.keys(allKeysSet).length !== newKeys.length) {    holder[key] = newObj   } else {    for (var i = 0, len = newKeys.length; i < len; ++i) {     var k = newKeys[i]     calcDiff(holder, key + '.' + k, newObj[k], oldObj[k])    }   }  } } else if (newObj !== oldObj) {  holder[key] = newObj }}function diff(newObj, oldObj) { var keys = Object.keys(newObj) var diffResult = {} for (var i = 0, len = keys.length; i < len; ++i) {  var k = keys[i]  var oldKeyPath = k.split('.')  var oldValue = oldObj[oldKeyPath[0]]  for (var j = 1, jlen = oldKeyPath.length; j < jlen && oldValue !== undefined; ++j) {   oldValue = oldValue[oldKeyPath[j]]  }  calcDiff(diffResult, k, newObj[k], oldValue) } return diffResult} 

var throttleSetData = throttle(function (page, data) { page.setData(diff(data, page.data));}, 50); 

throttleSetData(page, data);