<version :show="versionShow" @closeVersion="versionShow = false" @data="onData"></version>
<footBar url="index" :footShow="footShow"></footBar>

this.$emit('data', false); // false 隐藏tabbar，true显示tabbar

<template>
	<view class="footBar" v-if="footShow">
		footBar
	</view>
</template>
<script>
	export default {
		props: {
			footShow: {
				type: Boolean,
			}
		},
	}
</script>