简述：下拉多选框保存的是id数组，而实际上传给后端的是对象数组，这种时候的OnChange方法代码如下

             onProgramChanged(detail) {that = thiscurIds = detailpreObjs = this.ledConfs.programList;// 例如当前的id数组 curIds = [2, 3] // 之前的对象数组是 preObjs = [{"id": 1, "name": 11}, {"id": 3, "name": 33}, {"id": 5, "name": 55}]console.log(detail, preObjs)//1. 添加curIds中的新元素preIds = preObjs.map(item => { return item.id })newIds = []intersectionIds = []for (const id of curIds) {if (!preIds.includes(id)) {newIds.push(id)} else {intersectionIds.push(id)}}preObjs = preObjs.filter(item => {return intersectionIds.includes(item.id)})// console.log(that.ledConfs)for (const id of newIds) {preObjs.push({ "id": id, "name": that.optionsMap.get(id), "programTimes": 1, "programPriority": 1 })}// 排序preObjs.sort((a, b) => a.id - b.id)this.ledConfs.programList = preObjsconsole.log(preObjs)},