vue对枚举值转换方式

<el-table v-loading="loading.table" :data="data.list.items" fit stripe highlight-current-row :cell-style="cellStyle"
		element-loading-text="玩命加载中" element-loading-spinner="el-icon-loading" :header-cell-class-name="headerStyle"
		style="width:100%" @selection-change="handleSelectionChange" border :row-class-name="tableRowClassName">
		<el-table-column label="项目编号" align="center" prop="id" min-width="120">
		</el-table-column>
		<el-table-column label="项目名称" align="center" prop="xmmc" min-width="180">
		</el-table-column>
		<el-table-column label="建设单位" align="center" prop="jsdwmc" min-width="150">
		</el-table-column>
		<el-table-column label="开工日期" align="center" prop="jhkgrq" min-width="150">
		</el-table-column>
		<el-table-column label="竣工日期" align="center" prop="jhjgrq" min-width="150">
		</el-table-column>
		<el-table-column label="项目地址" align="center" prop="xmwz" min-width="180">
		</el-table-column>
		<el-table-column label="项目所属区域" align="center" prop="xzqh" min-width="120">
		</el-table-column>
		<el-table-column label="是否竣工" align="center" prop="sfjg" min-width="150" :formatter="stateFormat">
		</el-table-column>
		<el-table-column label="操作" align="center" min-width="120">
			<template slot-scope="scope">
				<el-button icon="el-icon-edit" size="mini" type="success" @click="lookHandler(scope.$index, scope.row)">查看
				</el-button>
			</template>
		</el-table-column>
	</el-table>

//转译
stateFormat(data) {
	if (data.sfjg != null && data.sfjg != "" && data.sfjg == 1) {
		return "已竣工";
	} else if (data.sfjg != null && data.sfjg != "" && data.sfjg == 0) {
		return "未竣工";
	}
},

const statustest = {
  insert:0,
  update:1,
  delete:2
}