vue 实现左侧分类列表，右侧文档列表

vue代码：

<template>
  <div class="div-container">
    <div class="div-left">
      <div class="div_left_top">分类</div>
      <div class="div-span">
        <div
          :class="['div-span-level2', { select: select_db_id == item2.id }]"
          v-for="(item2, index2) in document_list"
          :key="index2"
          @click="select_db(item2)"
        >
          <div>
            <!-- <i :class="[db_type(item2.db_type), 'i-db']"></i> -->
            <i :class="[db_type('S'), 'i-db']"></i>
            <span>{{ item2.name }}({{ item2.num }})</span>
          </div>
        </div>
      </div>
    </div>
    <div class="div-right">
      <div class="header">
        <div class="div-header-right" @click="ToAdd()">新增</div>
      </div>
      <div class="div-content">
        <el-table
          :data="tableData"
          border
          style=" 100%"
          :header-cell-style="{
            'text-align': 'left',
            background: '#fff',
            color: '#606266',
            height: '40px',
          }"
        >
          <el-table-column
            prop="appear_time"
            label="标题"
            min-width="300px"
            align="center"
            :formatter="Dateformater"
          ></el-table-column>

          <el-table-column
            prop="app_name"
            label="发布人"
            min-width="80px"
            align="center"
          ></el-table-column>
          <el-table-column
            prop="pro_type"
            label="发布时间"
            min-width="80px"
            align="center"
          ></el-table-column>

          <el-table-column label="操作" width="80px" align="center">
            <template slot-scope="scope">
              <el-button
                type="primary"
                @click="ToDoc(scope.row)"
                size="mini"
                plain
                >文档</el-button
              >
              <el-button
                type="primary"
                @click="ToUpdate(scope.row)"
                size="mini"
                plain
                >修改</el-button
              >
              <el-button
                type="danger"
                @click="DeletedutyPros(scope.row)"
                size="mini"
                plain
                >删除</el-button
              >
            </template>
          </el-table-column>
        </el-table>
      </div>
    </div>
  </div>
</template>

<style scoped>
.div-container {
   100%;
  height: calc(100%);
  background-color: #eee;
}
.div_left_top {
  background-color: #c2e9e2;
  height: 35px;
  line-height: 35px;
  text-align: center;
  letter-spacing: 15px;
  font-weight: bold;
}
.div-left {
   200px;
  margin-top: 20px;
  height: 100%;
  background-color: #fff;
}
.div-right {
  position: absolute;
  top: 170px;
  left: 415px;
   calc(100% - 440px);
  bottom: 0;
  background-color: #fff;
}
.header {
  height: 35px;
  line-height: 35px;
  background-color: #ebf7df;
}

.div-header-right {
  float: right;
   100px;
  margin-right: 5px;
  bottom: 0px;
  top: 20px;
  background-color: #c2e9e2;
  text-align: center;
  letter-spacing: 10px;
  font-weight: bold;
}

.div-left span {
  cursor: default;
}

.div-span-level2 {
  margin: 5px 5px 5px 5px;
}
.div-span-level2.select {
  background-color: #dbe9f6;
}
.div-span-level2 > div {
  height: 22px;
  line-height: 22px;
}

.div-span-level2 .i-db {
  background-color: #888;
  color: #fff;
}

.div-span-level2 .icon-hl-sqlsever {
  background-color: #eead0e;
}

.div-span-level2 .icon-hl-oracle {
  background-color: #ff4500;
}

.div-span-level2 .icon-hl-mysql {
  background-color: #00cd00;
}
</style>

<script>
export default {
  data() {
    return {
      document_list: [
        {
          id: "100",
          name: "文档类别1",
          num: 20,
        },
        {
          id: "200",
          name: "文档类别2",
          num: 20,
        },
        {
          id: "200",
          name: "文档类别3",
          num: 20,
        },
        {
          id: "200",
          name: "文档类别4",
          num: 20,
        },
        {
          id: "200",
          name: "文档类别5",
          num: 20,
        },
        {
          id: "200",
          name: "文档类别6",
          num: 20,
        },
      ],
      select_db_id: undefined,
      select_menu_id: "1",
    };
  },
  mounted() {},
  methods: {
    select_db(item) {
      this.select_db_id = item.id;
      console.log(this.select_db_id);
    },
    select_menu(item) {
      if (!this.select_db_id) {
        this.showTip("warning", "请选择数据库！");
        return;
      }
      this.select_menu_id = item.id;
    },

    db_type(value) {
      if (value == "S") {
        return "icon-hl-sqlsever";
      } else if (value == "O") {
        return "icon-hl-oracle";
      } else if (value == "M") {
        return "icon-hl-mysql";
      }
      return "icon-hl-db";
    },
  },
};
</script>

显示效果：