element彈窗里面的內(nèi)容清空？

<el-button type="primary" class="btn" @click.native="addCategory('form')">添加分類</el-button>
<el-dropdown-item @click.native="editor(scope.$index, tableData)">編輯</el-dropdown-item> <!-- Form -->
<el-dialog title="添加分類" :visible.sync="dialogFormVisible" @close='closeDialog'>

<el-form :model="form" ref="form">
   
   <el-button type="warning" @click.native="submitTo">提交</el-button>
<el-form>

</el-dialog>
要提交刪除都清空表單內(nèi)容使用this.$refs[formName].resetFields();都會(huì)報(bào)錯(cuò)resetFields undefined

methods:{
 submitTo() {
    this.dialogFormVisible = false
    console.log(this.form)
 },
    editor(index) {
        this.dialogFormVisible = true
        vm.form=eform
    },
    closeDialog() {
    },
}