uni-app切换导航栏1_uniapp 自定义导航栏切换闪烁问题

uni-app切换导航栏1

//tab.vue
<template>
	<div class="tabDemo w100 textc">
		<div class="fw500 ft28 c0" v-for="(item,index) in tabs" :key="index" @click="changeTab(index)">
			{{item}}
			<div class="line" v-if="tabIndex === index"></div>
		</div>
	</div>
	
</template>

<script>
	export default {
        name:'tab',
		props: { 
			tabs: Array,
			tabIndex: Number
		},
		data() {
			return {
			};
		},
		watch: {
			tabs(newVal) {
				this.tabs = newVal //对父组件传过来的值进行监听，如果改变也对子组件内部的值进行改变
			}
		},
		methods:{
			changeTab(index){
				console.log('tabIndex', this.tabIndex)
				this.$emit('tabsChange', index)
			}
		}
	}
</script>

<style scoped>
.tabDemo{
	height: 88px;
	background: #FFFFFF;
	display: flex;
	position: relative
}
div{
    position: relative;
    flex: 1;
    line-height: 100px;
    font-size: 28px;
    font-family: PingFangSC-Medium, PingFang SC;
    /* font-weight: 500; */
    color: #000000;
    font-weight: bold;
}
.line{
    position: absolute;
    bottom: 0;
    bottom: 0;
    width: 50px;
    height: 7px;
    background: #FF8C00;
    border-radius: 4px;
    left:50%;
    margin-left:-25px;
}
</style>

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<template>
    <div id='Three'>
        <!-- 切换导航部分 -->
       	<Tab :tabs='tabs' :tabIndex='status' @tabsChange='tabsChange'></Tab>
    </div>
</template>
<script>
import Tab from './tab/tab'
export default {
   components:{
        Tab,
    },
    data() {
        return {
            status:0,
            tabs: ['未支付', '已结款', '全部'],
        };
    },
    methods:{
        tabsChange(value){
            console.log('更改tab', value)
            this.status = value;
        },
    }
}
</script>
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