vue+element ui 实现右侧穿梭框上下排序

子组件：

<template>
	<div>
		<el-row>
			<el-col :span="20">
				<el-transfer v-model="outputListTemp" :data="inputList" :props="alias" target-order="push" @right-check-change="rightCheck"></el-transfer>
			</el-col>
			<el-col :span="4" style="margin-top: 95px;">
				<div style="margin-bottom: 10px;">
					<el-button icon="el-icon-arrow-up" circle :disabled="upDownDisable" @click="upData"></el-button>
				</div>
				<div>
					<el-button icon="el-icon-arrow-down" circle :disabled="upDownDisable" @click="downData"></el-button>
				</div>
			</el-col>
		</el-row>
	</div>
</template>

<script>
	import {
		Message,