vue3+ts项目技术点总结1

<el-pagination
        small
        background
        layout="prev, pager, next, jumper, total"
        :total="total"
        :current-page="pageNo"
        v-model:current-page="pageNo"
        v-model:page-size="pageSize"
        class="mt-4 pagination-fixed-bottom"
        @current-change="handleCurrentChange"
        ></el-pagination>

<el-select
      v-model="ruleForm.studentInfo.stuInfSex"
      placeholder="请选择性别"
>
     <el-option label="男" :value="1" />
     <el-option label="女" :value="2" />
 </el-select>

<el-select v-model="ruleForm.source.majorId">
    <el-option v-for="item in data.MajorList"
               :key="item.majorId"
               :label="item.majorName"
               :value="String(item.majorId)" />
</el-select>

import { storeToRefs } from "pinia";
const store = TrainingDetailsManageStore();
// 下面申请的常量，是ref类型的
 const { 
  pageNo,
  pageSize,
  total,
  list
 } = storeToRefs(store);

const getDataByTrainingId =async ()=>{
  let res = await selectTrainingEnrollById(pageNo.value,pageSize.value,Number(trainingId));
  if(res.data.code == 0){
    //也可以直接使用store.setTotal方法修改pinia中的值
    store.setTotal(res.data.data.total);
    store.setList(res.data.data.list);
  }else{
    ElMessage.error(res.data.message);
  }
}

import { useRouter } from "vue-router";
const router = useRouter();

//传参
router.push({
    path: "/conversiondetails",
    query: {
      id
    },
  });
  
 //获取参数
import { useRouter, useRoute } from "vue-router";

const router = useRouter();
const route = useRoute();
const id = route.query.id; //获取传递的id

<el-date-picker 
  v-model="regTime"
  type="date"
  value-format="yyyy-MM-dd"
></el-date-picker>

//向后端发起请求，获取文件信息
//注意：responseType类型的设置
export const exportData = (date : String) => {
  return axios({
    url: `/xx/xx/export`,
    responseType:'blob' ,
    method: "GET",
    params:{
        date
    }
  });
};

//获取数据后，怎么变成文件下载
exportData(year.value+"-"+month.value).then(res=>{
    const blob = new Blob([res.data]);
    const url = URL.createObjectURL(blob);
    const link = document.createElement('a');
    link.href = url;
    link.download = '学生数据.xlsx';
    link.click();
  });

const dataAdapter=(list:any)=>{
    if(list.length==0){
      return [];
    }
    let monthDays = new Date(year.value,month.value, 0).getDate(); //上一个月的最后一天日期
    let map;
      let key = "";
      let value = "";
      let hours ;
    
    //将对应天数的课时，写到map中
    for(let l=0;l<list.length;l++){
      map =  new Map();
      hours = list[l].List;
      if(hours.length!=0){
        for(let d=0;d<hours.length;d++){
          key = new Date(hours[d].time).getDate()+"";
          value =hours[d].cNum;
          map.set(key,value);
        }
      }
     
     //当前月的下半月
        for(let i=16;i<monthDays;i++){
            if(map.has(i+"")){
                //将对应天数的课时，进行赋值
                list[l]["date"+i]= map.get(i+"");
                continue;
            }
            list[l]["date"+i]= ""; 
        }
      
        //下个月的上半月
        for(let i=1;i<=15;i++){
          if(map.has(i+"")){
             list[l]["date"+i]= map.get(i+"");
             continue;
          }
          list[l]["date"+i]= ""; 
        }
    }
   
   console.log("list2",list);
    return list;
}