vite2 + vue3实现curd（四）：查询

• 查询所有用户

<script lang = "ts" scoped>
export default {
  data() {
    return {
    }
  },
  methods: {
    getUserList(){
        this.$http.get("user/userList").then((response)=>{
            console.log(response)
            if(response.data.code == 200) {
              console.log("获取成功！")
            }
          }).catch(error=>{console.error(error)});
    }
  },
  created(){
      this.getUserList();
  }
}
</script>

• 带参数查询

<script lang = "ts" scoped>
export default {
  data() {
    return {
    }
  },
  methods: {
    getUserList(){
        const reqData = {    
            username: "chen1",    
            sex: "0"
          } 
        this.$http.post("user/listAll", reqData).then((response)=>{
            console.log(response)
            if(response.data.code == 200) {
              console.log("获取成功！")
            }
          }).catch(error=>{console.error(error)});
    }
  },
  created(){
      this.getUserList();
  }
}
</script>

• 异步请求

<script lang = "ts" scoped>
export default {
  data() {
    return {
        UserList: []
    }
  },
  methods: {
    async getUserList(){
        const reqData = {    
            username: "chen1",    
            sex: "0"
          } 
        const {data: res} = await this.$http.post("user/listAll", reqData)
        console.log(res)
        this.UserList =  res;
    }
  },
  created(){
      this.getUserList();
  }
}
</script>

• 渲染数据

  <el-table
      class = "table"
      :data="UserList"
      style="width: 100%"
      :row-class-name="tableRowClassName"
      border
      stript
  >
      <el-table-column type="index" label="#" />
      <el-table-column prop="username" label="姓名" width="80" />
      <el-table-column prop="password" label="密码" width="80" />
      <el-table-column prop="price" label="价格" width="80" />
      <el-table-column prop="bookname" label="书名" width="80" />
      <el-table-column prop="birthday" label="生日" width="170" />
      <el-table-column label="状态" width="100" />
      <el-table-column label="操作" width="100" />
  </el-table>

• 详情

# js部分获取的数据
:data="UserList"

# 遍历字段
prop="username"

# 添加索引
<el-table-column type="index" label="#" />

• 状态

<!- element ui中scope.row可获取到当前行的数据>
<template>
  <div>
    <el-table-column label="状态" width="100">
        <template slot-scope="scope">
            {{scope.row}}
        </template>
        <el-switch v-model="scope.row.state" />
    </el-table-column>
  </div>
</template>

<!- element plus中scope.row无法获取>
<template>
  <div>
    <el-switch v-model="scope.row.state" />
  </div>
</template>

• 操作按钮

<!-- el-tooltip表示提示信息，:enterable="false"表示鼠标不能进入提示信息 -->
<el-table-column label="操作" width="300">
   <el-tooltip
        class="item"
        effect="dark"
        content="提示信息"
        placement="top-start"
        :enterable="false"
    >
        <el-button type="primary" :icon="Edit" size="mini">修改</el-button>
    </el-tooltip>
    <el-button type="primary" :icon="Share" size="mini">删除</el-button>
    <el-button type="primary" :icon="Delete" size="mini">设置</el-button>
 </el-table-column>

• 分页

<template>
  <div class="demo-pagination-block">
    <span class="demonstration">All combined</span>
    <el-pagination
      v-model:currentPage="currentPage4"
      :page-sizes="[100, 200, 300, 400]"
      :page-size="100"
      // total表示显示总数
      layout="total, sizes, prev, pager, next, jumper"
      :total="400"
      // 每页多少条发生改变时
      @size-change="handleSizeChange"
      // 页数发生改变时
      @current-change="handleCurrentChange"
    >
    </el-pagination>
  </div>
</template>

<script lang="ts">
import { defineComponent, ref } from 'vue'
export default defineComponent({
  setup() {
    const handleSizeChange = (val) => {
      console.log(`${val} items per page`)
      // 当数据发送改变时，将数据保存到data函数中，之后发送请求获取所需数据
    }
    const handleCurrentChange = (val) => {
      console.log(`current page: ${val}`)
    }
    return {
      currentPage1: ref(5),
      currentPage2: ref(5),
      currentPage3: ref(5),
      currentPage4: ref(4),
      handleSizeChange,
      handleCurrentChange,
    }
  },
})
</script>

• 使用v-for遍历时获取索引，v-on:click="show(item.id)"
• 超出隐藏

.span {
    white-space: nowrap; 
    text-overflow:ellipsis; 
    overflow:hidden; 
}