uniapp 滑动导航组件封装

<template>
    <view>
        <scroll-view scroll-x class="scroll-view_H">
            <!-- <view class="scrollbox"> -->
            <block v-for="(item,index) in menuList">
                <view :class="{'currentline':active==index}" @click="tabtap(index)">{{item}}</view>
            </block>
            <!-- </view> -->
        </scroll-view>
    </view>
</template>

<script>
    export default{
        props:{
            menuList:Array,
            active:Number
        },
        methods:{
            tabtap(index){
                this.$emit('tabtap',index)
            }
        }
    }
</script>

<style scoped lang="scss">
    .scroll-view_H {
        /* 文本不会换行，文本会在在同一行上继续，直到遇到 <br> 标签为止。 */
        white-space: nowrap;
         100%;
    
        view {
            display: inline-block;
            margin: 40rpx;
            font-size: 26rpx;
    
        }
    }
    
    .currentline {
        color: #000;
        font-weight: bold;
        position: relative;
    }
    
    .currentline::before {
        position: absolute;
        height: 4px;
         100%;
        background-color: #fede33;
        border-radius: 4px;
        content: "";
        left: 0;
        bottom: 0;
        z-index: -1;
    }
</style>

上面组件文件   scrollmenu.vue

引用scrollmenu.vue的首页文件

<template>
    <view>
        <scroll-tab :menuList="menuList" :active="active" @tabtap="tabtap" />
    </view>
</template>
<script>
    import scrollTab from "../../mycomponents/scrollmenu.vue"
    export default {
        data() {
            return {
                active: 0,
                menuList: [
                    "关注",
                    "推荐",
                    "体育",
                    "热点",
                    "推荐",
                    "体育",
                    "热点",
                    "财经"
                ]
            }
        },
        methods: {
            tabtap(index) {
                this.active = index
            }
        },
        components: {
            scrollTab
        }
    }
</script>

组件使用三步骤

引用组件   import scrollTab from "../../mycomponents/scrollmenu.vue"

注册组件   components: { scrollTab }

组件传值    <scroll-tab :menuList="menuList" :active="active" @tabtap="tabtap" />

效果图