使用vue + element-ui 的级联选择器 el-cascader 时遇到一个样式问题,有没有大神帮忙解答一下

代码:

<template>
  <el-dialog
    :title="!dataForm.id ? '新增' : '修改'"
    :close-on-click-modal="false"
    :visible.sync="visible"
  >
    <el-form
      :model="dataForm"
      :rules="dataRule"
      ref="dataForm"
      @keyup.enter.native="dataFormSubmit()"
      label-width="80px"
    >
      <el-form-item label="种类" prop="category">
        <el-cascader
          v-model="selectCategorys"
          :options="categorys"
          :props="categoryProps"
          @change="categoryHandleChange"
          clearable
          filterable
        ></el-cascader>
      </el-form-item>
      <el-form-item label="参数" prop="parameter">
        <el-cascader
          v-model="selectParams"
          :options="params"
          :props="paramProps"
          @change="paramHandleChange"
          clearable
          filterable
        ></el-cascader>
      </el-form-item>
      <el-form-item label="采购价" prop="purchasePrice">
        <el-input v-model="dataForm.purchasePrice" placeholder="采购价"></el-input>
      </el-form-item>
      <el-form-item label="零售价" prop="retailPrice">
        <el-input v-model="dataForm.retailPrice" placeholder="零售价"></el-input>
      </el-form-item>
    </el-form>
    <span slot="footer" class="dialog-footer">
      <el-button @click="visible = false">取消</el-button>
      <el-button type="primary" @click="dataFormSubmit()">确定</el-button>
    </span>
  </el-dialog>
</template>

<script>
export default {
  data() {
    return {
      paramProps: {
        multiple: true,
        value: "id",
        label: "name",
        children: "parameters"
      },
      categoryProps: {
        value: "id",
        label: "name",
        children: "childrens"
      },
      visible: false,
      selectCategorys: [],
      selectParams: [],
      categorys: [],
      params: [],
      dataForm: {
        id: 0,
        category: "",
        parameter: "",
        purchasePrice: "",
        retailPrice: "",
        createUser: "",
        createDate: "",
        status: ""
      },
      dataRule: {
        category: [
          { required: true, message: "种类不能为空", trigger: "blur" }
        ],
        parameter: [
          { required: true, message: "参数不能为空", trigger: "blur" }
        ],
        purchasePrice: [
          { required: true, message: "采购价不能为空", trigger: "blur" }
        ],
        retailPrice: [
          { required: true, message: "零售价不能为空", trigger: "blur" }
        ]
      }
    };
  },
  methods: {
    getParams() {
      this.$http({
        url: this.$http.adornUrl("/main/parametergroup/list"),
        method: "get",
        params: this.$http.adornParams({
          page: 0,
          limit: 999999,
          createUser: this.$store.state.user.name
        })
      }).then(({ data }) => {
        if (data && data.code === 0) {
          this.params = data.page.list;
        } else {
          this.params = [];
        }
        this.params.forEach(pg => {
          pg.parameters;
        });
      });
    },
    getCategorys() {
      this.$http({
        url: this.$http.adornUrl("/main/category/list/tree"),
        method: "get",
        params: this.$http.adornParams({})
      }).then(({ data }) => {
        console.log(data);
        this.categorys = data.data;
        this.handleCategory(this.categorys);
      });
    },
    handleCategory(arr) {
      for (let index = 0; index < arr.length; index++) {
        if (arr[index].childrens.length == 0) {
          arr[index] = {
            id: arr[index].id,
            name: arr[index].name,
            parentId: arr[index].parentId
          };
        } else {
          this.handleCategory(arr[index].childrens);
        }
      }
    },
    init(id) {
      this.dataForm.id = id || 0;
      this.visible = true;
      this.$nextTick(() => {
        this.$refs["dataForm"].resetFields();
        this.getCategorys();
        this.getParams();
        if (this.dataForm.id) {
          this.$http({
            url: this.$http.adornUrl(
              `/main/commoditycategory/info/${this.dataForm.id}`
            ),
            method: "get",
            params: this.$http.adornParams()
          }).then(({ data }) => {
            if (data && data.code === 0) {
              this.dataForm.category = data.commodityCategory.category;
              console.log(this.dataForm.category);

              if (this.dataForm.category.includes(",")) {
                this.selectCategorys = this.dataForm.category.split(",");
              } else {
                this.selectCategorys = [this.dataForm.category];
              }
              this.dataForm.parameter = data.commodityCategory.parameter;
              var arr = this.dataForm.parameter.split(",");
              for (let index = 0; index < arr.length; index++) {
                if (index % 2 == 0) {
                  this.selectParams.push([arr[index], arr[index + 1]]);
                }
              }
              this.dataForm.purchasePrice =
                data.commodityCategory.purchasePrice;
              this.dataForm.retailPrice = data.commodityCategory.retailPrice;
              this.dataForm.createUser = data.commodityCategory.createUser;
              this.dataForm.createDate = data.commodityCategory.createDate;
              this.dataForm.status = data.commodityCategory.status;
            }
          });
        }
      });
    },
    // 表单提交
    dataFormSubmit() {
      this.$refs["dataForm"].validate(valid => {
        if (valid) {
          this.$http({
            url: this.$http.adornUrl(
              `/main/commoditycategory/${!this.dataForm.id ? "save" : "update"}`
            ),
            method: "post",
            data: this.$http.adornData({
              id: this.dataForm.id || undefined,
              category: this.selectCategorys.join(","),
              parameter: this.selectParams.join(","),
              purchasePrice: this.dataForm.purchasePrice,
              retailPrice: this.dataForm.retailPrice,
              createUser: this.$store.state.user.name,
              createDate: Date.now(),
              status: this.dataForm.status
            })
          }).then(({ data }) => {
            if (data && data.code === 0) {
              this.$message({
                message: "操作成功",
                type: "success",
                duration: 1500,
                onClose: () => {
                  this.visible = false;
                  this.$emit("refreshDataList");
                }
              });
            } else {
              this.$message.error(data.msg);
            }
          });
        }
      });
    },
    paramHandleChange(value) {
      this.dataForm.parameter = value.join(",");
    },
    categoryHandleChange(value) {
      this.dataForm.category = value.join(",");
    }
  }
};
</script>

　　官网上显示的样式是这样:

 

 但是本地代码启动后是这样:

 

 

请问是哪除了问题呢...求大神...