在使用vue和element-ui做一个页面，在做数据回显的时候出现了一个问题。

有些值需要传入到子组件中。具体办法就是在msgbox选项中添加一个属性。然后在子组件中使用this.$parent.data调用数据就行了

<template>
  <div id="side">
    <div id="menu">
      <el-button type="primary" icon="el-icon-folder-add" @click="addNode"></el-button>
      <el-button type="primary" icon="el-icon-edit-outline" @click="editNode"></el-button>
      <el-button type="primary" icon="el-icon-folder-delete" @click="deleteNode"></el-button>
    </div>
    <div id="tree">
      <el-input placeholder="输入关键字进行过滤" v-model="filterText"></el-input>
      <el-tree
        class="filter-tree"
        :data="data"
        :props="defaultProps"
        default-expand-all
        show-checkbox
        :render-content="renderContent"
        :filter-node-method="filterNode"
        ref="tree"
      ></el-tree>
    </div>
  </div>
</template>

<script>
let req_data = [
        {
          id: 1,
          label: "一级 1",
          children: [
            {
              id: 4,
              label: "二级 1-1",
              children: [
                {
                  id: 9,
                  label: "三级 1-1-1"
                },
                {
                  id: 10,
                  label: "三级 1-1-2"
                }
              ]
            }
          ]
        },
        {
          id: 2,
          label: "一级 2",
          children: [
            {
              id: 5,
              label: "二级 2-1"
            },
            {
              id: 6,
              label: "二级 2-2"
            }
          ]
        },
        {
          id: 3,
          label: "一级 3",
          children: [
            {
              id: 7,
              label: "二级 3-1"
            },
            {
              id: 8,
              label: "二级 3-2"
            }
          ]
        }
      ]

import Form from './formComponent/Form'

export default {
  name: "Side",
  watch: {
    filterText(val) {
      this.$refs.tree.filter(val);
    }
  },
  data() {
    return {
      filterText: "",
      data: req_data,
      defaultProps: {
        children: "children",
        label: "label"
      }
    };
  },
  components: {
    "v-form": Form
  },
  methods: {
    handleNodeClick(data) {
      console.log(data);
    },
    filterNode(value, data) {
      if (!value) return true;
      return data.label.indexOf(value) !== -1;
    },
    addNode() {
      console.log("添加节点！");
      this.$alert("<strong>这是 <i>HTML</i> 片段</strong>", "添加节点", {dangerouslyUseHTMLString: true})
    },
    editNode(data) {
      console.log("editNode-data:", data);
      this.$msgbox({
          title: "编辑节点",
          message: <v-form ref="editForm" ></v-form>, // 在message 中可以添加组件进行
          showCancelButton: true,
          confirmButtonText: '确定', 
          cancelButtonText: '取消',
          data: this.data,  // 把数据放入组件中
          beforeClose: (action, instance, done) => {
            if (action === 'confirm') {
              instance.confirmButtonLoading = true;
              instance.confirmButtonText = '执行中...';
              setTimeout(() => {
                done();
                setTimeout(() => {
                  instance.confirmButtonLoading = false;
                }, 300);
              }, 3000);
            } else {
              done();
            }
          }
        }).then(action => {
          this.$message({
            type: 'info',
            message: "编辑成功！"
          });
        }).catch(msg => {
          if (msg == "cancel") {
            this.$message.info("已取消")
          } else {
            this.$message.error("编辑失败")
          }
        });
    },
    deleteNode(node, data) {
      console.log("deleteNode");
      console.log("deleteNode-node:", node);
      console.log("deleteNode-data:", data);
      this.$confirm("此操作将会删除该节点，是否继续？", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning"
      })
        .then(() => {
          //当点击删除的时候调用的函数
          const parent = node.parent;
          const children = parent.data.children || parent.data;
          const index = children.findIndex(d => d.id === data.id);
          children.splice(index, 1);
          this.$message.success("删除成功");
        })
        .catch((error) => {
          // 当点击取消或者出现异常的时候的时候的回调函数,
          if (error == "cancel") {
            this.$message.info("已取消删除");
          } else {
            this.$message.error("发生了错误！" + error)
          }
          
        });
    },
    renderContent(h, { node, data, store }) {
        /***
         * h可以接受3个参数，
         * 1.html标签字符串（String）|组件选项对象（Object）|节点解析函数（function）
         * 2.定义节点特性的对象
         * 3.子节点，h构建的VNode节点或字符串生成的无标签文本节点(Array|String)
         */
        return h("span", {
          class: ["custom-tree-node"], //绑定类名
          style: {
            width: "100%",
            "text-align": "left"
          }
        }, [
          h("span", {
            domProps:{innerText:data.label},
          }),
          h("span", {
            style:{
              float: "right",
            },
          }, [
            h("el-button", {  // 创建按钮---编辑按钮
              attrs: {
                size: 'mini',
                type:"text"
              },
              domProps: {innerText:"编辑"},
              on: {
                click: () => this.editNode(data)
              }
            }),
            h("el-button", {  // 创建按钮---删除按钮
              attrs: {
                size: 'mini',
                type:"text",
                disabled: data.children ? true : false
              },
              domProps: {innerText:"删除"},
              on: {
                click: () => this.deleteNode(node, data)
              }
            }),
          ])
        ])
      }
  }
};
</script>

<style scoped>

</style>

一个form子组件

<template>
    <div>
        <el-form ref="form">
            <el-form-item label="活动名称">
                <el-select v-model="form.item1" placeholder="请选择活动区域">
                    <el-option label="根节点" value="0"></el-option> 
                    <el-option v-for="(item, index) in list_data" label="{item.label}" value="item.id" :key="'editForm-' + index">{{item.label}}</el-option>
                </el-select>
            </el-form-item>
        </el-form>
        <el-button type="primary" @click="printData">打印信息</el-button>
    </div>
</template>

<script>
export default {
    name: "editForm",
    data () {
        return {
            form: {
                item: String 
            },
            list_data: this.$parent.data
        }
    },
    methods: {
        printData () {
            console.log("parent:", this.$parent.data)
            console.log(this.list_data)
        }
    }
    // props: [data]
}
</script>

<style scoped>

</style>