MiniPrograms/subpkg/MyMsg/MyMsg.vue

<template>
	<view class="u-demo-block">
		<view class="u-demo-block-content">
			<view class="u-alert-item" v-for="(item,index) in myData.msgList" :key="index">
				<u-alert class="alert" :description="item" type="warning" effect="dark" closable
					@click="deleteMsg(index)"></u-alert>
			</view>
		</view>
	</view>
</template>

<script>
	import {
		mapState,
		mapMutations
	} from 'vuex';

	export default {
		computed: {
			...mapState('m_parent', ['myData'])
		},
		data() {
			return {};
		},
		methods: {
			...mapMutations('m_parent', ['updateMyMsg']),
			//删除信息
			deleteMsg(index) {
				let msgList = this.myData.msgList
				let after = msgList.splice(index, 1)
				this.updateMyMsg(after)
			}
		}
	}
</script>

<style lang="scss">
	.u-alert-item {
		margin: 20rpx;
	}
</style>