elementplus less 样式穿透

先上功能效果

具体实现功能，从左侧列表选中放到右侧列表，从右侧列表选中放到左侧列表，左右两个列表可进行模糊查询，按条件搜索等功能，这些模糊搜索和条件查询全部js实现

准备内容

1、data数据

// --------------选择学生模块----------
      stuShow: false,
      // 左侧查询参数
      stuForm1: {
        name: "",
        schoolId: "", //学校id
        gradeId: "", //年级id
        classId: "", //班级id
      },
      // 右侧侧查询参数
      stuForm2: {
        name: "",
        schoolId: "", //学校id
        gradeId: "", //年级id
        classId: "", //班级id
      },
      // 全部学生
      stuTable: [],
      // 左侧学生表格数据暂存
      stuTable1: [],
      // 右侧学生表格数据暂存
      stuTable2: [],
      // 左侧学生表格数据
      stuTable11: [],
      // 右侧学生表格数据
      stuTable22: [],
      stuIdsL: [], //左侧选中的学生
      stuIdsR: [], //右侧选中的学生
      stuIds: [], //所有选中的学生

2、HTML内容，这里我用的是个弹窗，注意：这里的表格数据我掉的接口，姓名模糊搜索、学校、年级、班级查询用的死数据

<!-- 选择成员对话框 -->
    <el-dialog
      :visible.sync="stuShow"
      width="1200px"
      append-to-body
      title="人员管理"
    >
      <div class="stuDiv">
        <div class="stuDivItem">
          <div class="top">班级未加入人员</div>
          <div class="stuForm">
            <el-input
              placeholder="请输入姓名"
              suffix-icon="el-icon-search"
              v-model="stuForm1.name"
              size="mini"
              @input="stuChange1"
              clearable
            ></el-input>
          </div>
          <div class="stuForm">
            <el-select
              v-model="stuForm1.schoolId"
              placeholder="请选择学校"
              size="mini"
              @change="stuChange1"
              clearable
            >
              <el-option label="清丰县实验初级中学" value="10006"></el-option>
              <el-option label="金水区一小" value="10004"></el-option>
            </el-select>
            <el-select
              v-model="stuForm1.gradeId"
              placeholder="请选择年级"
              size="mini"
              @change="stuChange1"
              clearable
            >
              <el-option label="一年级" value="10010"></el-option>
              <el-option label="七年级" value="10007"></el-option>
            </el-select>
            <el-select
              v-model="stuForm1.classId"
              placeholder="请选择班级"
              size="mini"
              @change="stuChange1"
              clearable
            >
              <el-option label="十班" value="10020"></el-option>
              <el-option label="一班" value="10011"></el-option>
            </el-select>
          </div>

          <div class="stuTable">
            <el-table
              :data="stuTable11"
              @selection-change="stuSelectionChangeL"
              max-height="500"
              ref="stuTableL"
            >
              <el-table-column type="selection" width="55" align="center" />
              <!-- <el-table-column label="书圈编号" align="center" prop="id" /> -->
              <el-table-column label="学校" align="center" prop="schoolName" />
              <el-table-column label="姓名" align="center" prop="name" />
              <el-table-column label="年级" align="center" prop="gradeName" />
              <el-table-column label="班级" align="center" prop="className"
            /></el-table>
          </div>
        </div>
        <div class="stuBtn">
          <!-- <div @click="checkStu(1)">
            <img src="../../../assets/images/left.png" alt="" />
          </div>
          <div @click="checkStu(2)">
            <img src="../../../assets/images/right.png" alt="" />
          </div> -->
          <el-button
            @click="checkStu(1)"
            type="primary"
            icon="el-icon-back"
            circle
            :disabled="stuIdsR.length == 0"
          ></el-button>
          <el-button
            @click="checkStu(2)"
            type="primary"
            icon="el-icon-right"
            circle
            :disabled="stuIdsL.length == 0"
          ></el-button>
        </div>
        <div class="stuDivItem">
          <div class="top">班级已加入人员</div>
          <div class="stuForm">
            <el-input
              placeholder="请输入姓名"
              suffix-icon="el-icon-search"
              v-model="stuForm2.name"
              size="mini"
              @input="stuChange2"
              clearable
            ></el-input>
          </div>
          <div class="stuForm">
            <el-select
              v-model="stuForm2.schoolId"
              placeholder="请选择学校"
              size="mini"
              @change="stuChange2"
              clearable
            >
              <el-option label="清丰县实验初级中学" value="10006"></el-option>
              <el-option label="金水区一小" value="10004"></el-option>
            </el-select>
            <el-select
              v-model="stuForm2.gradeId"
              placeholder="请选择年级"
              size="mini"
              @change="stuChange2"
              clearable
            >
              <el-option label="一年级" value="10010"></el-option>
              <el-option label="七年级" value="10007"></el-option>
            </el-select>
            <el-select
              v-model="stuForm2.classId"
              placeholder="请选择班级"
              size="mini"
              @change="stuChange2"
              clearable
            >
              <el-option label="十班" value="10020"></el-option>
              <el-option label="一班" value="10011"></el-option>
            </el-select>
          </div>

          <div class="stuTable">
            <el-table
              :data="stuTable22"
              @selection-change="stuSelectionChangeR"
              max-height="500"
              ref="stuTableR"
            >
              <el-table-column type="selection" width="55" align="center" />
              <el-table-column label="学校" align="center" prop="schoolName" />
              <el-table-column label="姓名" align="center" prop="name" />
              <el-table-column label="年级" align="center" prop="gradeName" />
              <el-table-column label="班级" align="center" prop="className"
            /></el-table>
          </div>
        </div>
      </div>

      <div class="btns">
        <el-button size="mini" @click="stuShow = false">取消</el-button>
        <el-button type="primary" size="mini" @click="submitStu"
          >确定</el-button
        >
      </div>
    </el-dialog>

3、CSS样式

.stuDiv {
  width: 100%;
  height: auto;
  display: flex;
  flex-flow: row nowrap;
  justify-content: space-between;

  .stuDivItem {
    width: 500px;
    .top {
      width: 100%;
      height: 39px;
      font-size: 16px;
      font-family: SourceHanSansCN-Regular-, SourceHanSansCN-Regular;
      font-weight: normal;
      color: #161616;
      line-height: 16px;
      text-align: center;
    }
    .stuForm {
      width: 100%;
      height: auto;
      display: flex;
      flex-flow: row nowrap;
      justify-content: space-between;
      align-items: center;
      gap: 10px;
      margin-bottom: 16px;
    }
    .stuTable {
      width: 100%;
      height: auto;
      background: #ffffff;
      box-shadow: 0px 3px 6px 1px rgba(0, 0, 0, 0.0588);
    }
  }
  .stuBtn {
    width: 150px;
    display: flex;
    flex-flow: column nowrap;
    justify-content: center;
    align-items: center;
    .el-button {
      margin: 10px 0;
      scale: 1.2;
    }
    div {
      width: 70px;
      height: 70px;
      cursor: pointer;
      img {
        width: 70px;
        height: 70px;
      }
    }
  }
}

实现步骤

1、获取全部数据，即左右侧两个列表数据和，也可以获取左右两个列表数据之后拼在一起 这里会有两种情况（新增和编辑，在此只展示新增，编辑原理一样）

1、新增的时候左侧表格是全部数据，右侧数据为空，所以将获取到的全部数据放进左侧表格

2、编辑的时候，将已经选中的放进右侧，未选的放进左侧，数据自行准备

// 添加成员按钮
    addStuShow() {
      this.stuShow = true;
      this.stuTable11 = JSON.parse(JSON.stringify(this.stuTable1));
      this.stuTable22 = JSON.parse(JSON.stringify(this.stuTable2));
    },

2、左右两个表格数据的搜索功能

// 左侧条件更换
    stuChange1() {
      this.stuTable11 = [];

      for (let i = 0; i < this.stuTable1.length; i++) {
        const element = this.stuTable1[i];
        if (
          element.name.indexOf(this.stuForm1.name) != -1 &&
          element.schoolId.indexOf(this.stuForm1.schoolId) != -1 &&
          element.gradeId.indexOf(this.stuForm1.gradeId) != -1 &&
          element.classId.indexOf(this.stuForm1.classId) != -1
        ) {
          this.stuTable11.push(element);
        }
      }
      // 根据id进行排序
      this.stuTable11.sort((a, b) => {
        return +a.id - +b.id;
      });
    },
    // 右侧条件更换
    stuChange2() {
      this.stuTable22 = [];

      for (let i = 0; i < this.stuTable2.length; i++) {
        const element = this.stuTable2[i];
        if (
          element.name.indexOf(this.stuForm2.name) != -1 &&
          element.schoolId.indexOf(this.stuForm2.schoolId) != -1 &&
          element.gradeId.indexOf(this.stuForm2.gradeId) != -1 &&
          element.classId.indexOf(this.stuForm2.classId) != -1
        ) {
          this.stuTable22.push(element);
        }
      }
      // 根据id进行排序

      this.stuTable22.sort((a, b) => {
        return +a.id - +b.id;
      });
    },

3、获取左右两个列表选中的数据

// 左侧表格选中
    stuSelectionChangeL(selection) {
      console.log(selection);
      this.stuIdsL = selection.map((item) => item.id);
    },
    // 右侧表格选中
    stuSelectionChangeR(selection) {
      console.log(selection);
      this.stuIdsR = selection.map((item) => item.id);
    },

4、重点来了，根据选中未选中将数据放进左右两个表格

// 更改学生选中状态
    checkStu(type) {
      this.stuIds = [];
      this.stuIds = this.stuIdsL.concat(this.stuIdsR);
      //1是取消选择选中
      if (type == 1) {
        for (let i = 0; i < this.stuTable2.length; i++) {
          const element = this.stuTable2[i];
          if (this.stuIdsR.indexOf(element.id) != -1) {
            let obj = this.stuTable2.splice(i, 1);
            this.stuTable1.push(obj[0]);
            i--;
          }
        }
        this.stuTable11 = JSON.parse(JSON.stringify(this.stuTable1));
        this.stuTable22 = JSON.parse(JSON.stringify(this.stuTable2));
      } else {
        for (let i = 0; i < this.stuTable1.length; i++) {
          const element = this.stuTable1[i];
          if (this.stuIdsL.indexOf(element.id) != -1) {
            let obj = this.stuTable1.splice(i, 1);
            this.stuTable2.push(obj[0]);
            i--;
          }
        }
        this.stuTable11 = JSON.parse(JSON.stringify(this.stuTable1));
        this.stuTable22 = JSON.parse(JSON.stringify(this.stuTable2));
      }
      this.stuChange1();
      this.stuChange2();
      // 如果想左面选中跳到右面后也默认选中，就取消注释
      // this.$nextTick(() => {
      //   this.setTableSelect(type);
      // });

      this.$forceUpdate();
    },

5、如果想左侧选中后放到右侧表格也默认选中，则调用这个方法

// 设置表格选中
    setTableSelect(type) {
      if (this.stuIds.length > 0 && type == 1) {
        this.stuTable11.forEach((row) => {
          let idx = this.stuIds.indexOf(row.id);

          if (idx > -1) {
            this.$refs.stuTableL.toggleRowSelection(row);
          }
        });
      } else if (this.stuIds.length > 0 && type == 2) {
        this.stuTable22.forEach((row) => {
          let idx = this.stuIds.indexOf(row.id);

          if (idx > -1) {
            this.$refs.stuTableR.toggleRowSelection(row);
          }
        });
      }
    },

6、点击确定可获取右侧数据，进行后续操作

// 获取选中学生
    submitStu() {
      console.log(this.stuTable2);
    },

over