uniapp选中改变样式

<template>
	<view>
		<!--顶部轨迹-->
		<scroll-view class="scroll-view_H" scroll-x="true" scroll-left="0">
			<view class="topbox">
				<view class="locusnum" :class="{'selectlocusnum': rSelect.indexOf(index)!=-1}"
					v-for="(value,index) in infoArr" :key="index" @tap="tapInfo(index)">
					{
   
   {value.name}}
				</view>
			</view>
		</scroll-view>

	</view>
</template>

<script>
	export default {
		components: {},
		data() {
			return {
				infoArr: [{
					name: "全天轨迹"
				}, {
					name: "轨迹1"
				}, {
					name: "轨迹2"
				}, {
					name: "轨迹3"
				}, {
					name: "轨迹4"
				}, {
					name: "轨迹5"
				}, {
					name: "轨迹6"
				}, {
					name: "轨迹7"
				}, {
					name: "轨迹8"
				}],
				rSelect: []

			};
		},
		methods: {
            //可多选
			tapInfo(e) {
				// console.log('数组indexOf-----', this.rSelect)
				if (this.rSelect.indexOf(e) == -1) {
					// console.log('打印下标====', e)
					this.rSelect.push(e); //选中添加到数组里
				} else {
					this.rSelect.splice(this.rSelect.indexOf(e), 1); //取消
				}
			}
		},
	};
</script>

<style lang="scss">
	.scroll-view_H {
		white-space: nowrap;
		width: 100%;
	}

	.topbox {
		display: flex;
		align-items: center;
	}

	.locusnum {
		padding: 14rpx 30rpx;
		margin: 10rpx 10rpx;
		text-align: center;
		font-size: 28rpx;
		color: #9b9b9b;
		border-radius: 10rpx;
		background-color: #f7f7f7;
	}

	.selectlocusnum {
		padding: 14rpx 30rpx;
		margin: 10rpx 10rpx;
		text-align: center;
		font-size: 28rpx;
		color: white;
		border-radius: 10rpx;
		background-color: black;
	}
</style>

可多选状态：

 

单选状态：

methods: {
			tapInfo(e) {
				if (this.rSelect.indexOf(e) == -1) {
					this.rSelect.splice(0, this.rSelect.length); //清空 每次点击都会先清空再添加一个，这样永远都是一个，就变成了单选
					this.rSelect.push(e);
				} else {
					this.rSelect.splice(this.rSelect.indexOf(e), 1); //取消
				}
			}
		},

只能选中一个