1、for循环中处理异步问题（调用查询数据库的耗时操作）
错误代码：（下面这个代码如果执行后，会出现查询出来的值赋值混乱的现象）
if ($scope.isOther(orderClass)) {getStartAndEndDateTime(data.object.packBeginDay, data.object.packEndDay, function (startDateTime, endDateTime) {for (var i in cpExamLabMasterList) {//for循环中查询数据库的操作cpExamLabMasterList[i].orderClass = orderClass;var id = getId();id = packOrderDetail.id + id;cpExamLabMasterList[i].startDateTime = startDateTime;cpExamLabMasterList[i].endDateTime = endDateTime;$scope.cpOrderTreatList.push(cpExamLabMasterList[i]);var orderDetail = getOrderDetailTreat(cpExamLabMasterList[i], id, packOrderDetail.id);orderDetail.performDeptList = [];/*处置|其他执行科室 查询数据库耗时操作*/if(cpExamLabMasterList[i].cpTreatItemList.length > 0){var successCallback = function (data) {orderDetail.performDeptList = angular.copy(data);//把查询出来的数据赋值给下标对应的对象};HrUtils.httpRequest($http, Path.getUri("api/treat-dict/perform-dept/"), successCallback , HrUtils.httpMethod.GET);}checkSelectAttr(packOrderDetail,orderDetail,i);$scope.cpOrderDetailList.push(orderDetail);}});}
正确代码：
if ($scope.isOther(orderClass)) {getStartAndEndDateTime(data.object.packBeginDay, data.object.packEndDay, function (startDateTime, endDateTime) {var aysncInfo = {index: 0, count: cpExamLabMasterList.length};refreshTreatWithPerformDept(orderClass, startDateTime, endDateTime, packOrderDetail, cpExamLabMasterList, aysncInfo);});}var refreshTreatWithPerformDept = function (orderClass, startDateTime, endDateTime, packOrderDetail, cpExamLabMasterList, aysncInfo) {if (aysncInfo.index === aysncInfo.count) {return;}var cpExamLabMaster = cpExamLabMasterList[aysncInfo.index];cpExamLabMaster.orderClass = orderClass;var id = getId();id = packOrderDetail.id + id;cpExamLabMaster.startDateTime = startDateTime;cpExamLabMaster.endDateTime = endDateTime;$scope.cpOrderTreatList.push(cpExamLabMaster);var orderDetail = getOrderDetailTreat(cpExamLabMaster, id, packOrderDetail.id);checkSelectAttr(packOrderDetail, orderDetail, aysncInfo.index);$scope.cpOrderDetailList.push(orderDetail);aysncInfo.index++;if (orderDetail.itemCode && (orderClass === orderClassEnum.orderTreat || orderClass === orderClassEnum.orderNurse)) {var successCallback = function (data) {orderDetail.performDeptList = angular.copy(data);refreshTreatWithPerformDept(orderClass, startDateTime, endDateTime, packOrderDetail, cpExamLabMasterList, aysncInfo);};var errorCallback = function () {refreshTreatWithPerformDept(orderClass, startDateTime, endDateTime, packOrderDetail, cpExamLabMasterList, aysncInfo);};HrUtils.httpRequest($http, Path.getUri("api/treat-dict/perform-dept/"), successCallback, hrDialog, errorCallback, HrUtils.httpMethod.GET,);} else {refreshTreatWithPerformDept(orderClass, startDateTime, endDateTime, packOrderDetail, cpExamLabMasterList, aysncInfo);}};
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