Vue3導航欄組件封裝實現方法

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在Vue3中封裝一個導航欄組件，並且實現，隨著滾動條滾動實現一個吸頂效果，供大傢參考

導航欄組件的效果圖：

滾動條滾動以後的吸頂效果示意圖：

具體代碼展示：

<template>
  <header class="app-header">
    <div class="container">
      <!-- 頭部導航區域 -->
      <HeaderNavCommon />
      <div class="search">
        <i class="iconfont icon-search"></i>
        <input type="text" placeholder="搜一搜" />
      </div>
      <div class="cart">
        <a href="#" class="curr">
          <i class="iconfont icon-cart"></i>
          <em>2</em>
        </a>
      </div>
    </div>
  </header>
</template>
 
<script>
import HeaderNavCommon from '@/components/header-nav-common.vue'
export default {
  name: 'AppHeader',
  components: {
    HeaderNavCommon
  }
}
</script>
 
<style scoped lang="less">
.app-header {
  background: #fff;
  .container {
    display: flex;
    align-items: center;
  }
  .navs {
    width: 820px;
    display: flex;
    justify-content: space-around;
    padding-left: 40px;
    li {
      margin-right: 40px;
      width: 38px;
      text-align: center;
      a {
        display: inline-block;
        font-size: 16px;
        line-height: 32px;
        height: 32px;
      }
      &:hover {
        a {
          color: @xtxColor;
          border-bottom: 1px solid @xtxColor;
        }
      }
    }
  }
  .search {
    width: 170px;
    height: 32px;
    position: relative;
    border-bottom: 1px solid #e7e7e7;
    line-height: 32px;
    .icon-search {
      font-size: 18px;
      margin-left: 5px;
    }
    input {
      width: 140px;
      padding-left: 5px;
      color: #666;
    }
  }
  .cart {
    width: 50px;
    .curr {
      height: 32px;
      line-height: 32px;
      text-align: center;
      position: relative;
      display: block;
      .icon-cart {
        font-size: 22px;
      }
      em {
        font-style: normal;
        position: absolute;
        right: 0;
        top: 0;
        padding: 1px 6px;
        line-height: 1;
        background: @helpColor;
        color: #fff;
        font-size: 12px;
        border-radius: 10px;
        font-family: Arial;
      }
    }
  }
}
</style>

中間菜單部門單獨封裝一個組件，實現兩個組件的復用  （HeaderNavCommon組件）

<template>
  <ul class="app-header-nav">
    <li class="home"><RouterLink to="/">首頁</RouterLink></li>
    <li><a href="#" >美食</a></li>
    <li><a href="#" >餐廚</a></li>
    <li><a href="#" >藝術</a></li>
    <li><a href="#" >電器</a></li>
    <li><a href="#" >居傢</a></li>
    <li><a href="#" >洗護</a></li>
    <li><a href="#" >孕嬰</a></li>
    <li><a href="#" >服裝</a></li>
    <li><a href="#" >雜貨</a></li>
  </ul>
</template>
 
<script>
 export default {
    name: 'AppHeaderNav'
   }
</script>
 
<style scoped lang='less'>
.app-header-nav {
    width: 820px;
    display: flex;
    padding-left: 40px;
    position: relative;
    z-index: 998;
  li {
    margin-right: 40px;
    width: 38px;
    text-align: center;
  a {
    font-size: 16px;
    line-height: 32px;
    height: 32px;
    display: inline-block;
   }
  &:hover {
    a {
    color: @xtxColor;
    border-bottom: 1px solid @xtxColor;
        }
      }
  }
}
</style>

封裝吸頂效果的組件

<template>
  <div class="app-header-sticky" :class="{ show: top >= 78 }">
    <div class="container" v-if="top >= 78">
      <!-- 中間 -->
      <HeaderNavCommon />
      <!-- 右側按鈕 -->
      <div class="right">
        <RouterLink to="/">品牌</RouterLink>
        <RouterLink to="/">專題</RouterLink>
      </div>
    </div>
  </div>
</template>
 
<script>
import HeaderNavCommon from '@/components/header-nav-common.vue'
// import { ref } from 'vue'
import { useWindowScroll } from '@vueuse/core'
export default {
  name: 'AppHeaderSticky',
  components: { HeaderNavCommon },
  setup() {
    // 頁面滾動距離
    // const top = ref(0)
    // window.onscroll = () => {
    //   top.value = document.documentElement.scrollTop
    // }
    // 頁面滾動利用第三方包
    const { y: top } = useWindowScroll()
    return { top }
  }
}
</script>
 
<style scoped lang="less">
.app-header-sticky {
  width: 100%;
  height: 80px;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 999;
  background-color: #fff;
  border-bottom: 1px solid #e4e4e4;
  // 此處為關鍵樣式!!!
  // 默認情況下完全把自己移動到上面
  transform: translateY(-100%);
  // 完全透明
  opacity: 0;
  // 顯示出來的類名
  &.show {
    transition: all 0.3s linear;
    transform: none;
    opacity: 1;
  }
  .container {
    display: flex;
    align-items: center;
  }
  .right {
    width: 220px;
    display: flex;
    text-align: center;
    padding-left: 40px;
    border-left: 2px solid @xtxColor;
    a {
      width: 38px;
      margin-right: 40px;
      font-size: 16px;
      line-height: 1;
      &:hover {
        color: @xtxColor;
      }
    }
  }
}
</style>

以上就是本文的全部內容，希望對大傢的學習有所幫助，也希望大傢多多支持WalkonNet。

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