How to implement carousel component using Vue?

With the popularity of mobile devices, the carousel component has become an indispensable part of many front-end projects. In this article, we will introduce step by step how to implement a simple carousel component using Vue.

1. Initialize Vue project

Use Vue-cli to initialize a new Vue project and install dependent libraries:

vue create slideshow
cd slideshow
npm install --save vue-router vue-awesome-swiper

Among them, vue -router is the routing library officially provided by Vue, and vue-awesome-swiper is a Vue-encapsulated Swiper plug-in.

2. Create a carousel component

Create a folder named components in the src directory, in which Create a component file named Slideshow.vue:

<template>
  <div class="swiper-container">
    <div class="swiper-wrapper">
      <div class="swiper-slide" v-for="item in list" :key="item.id">
        <img :src="item.src" alt="item.title" />
      </div>
    </div>
    <div class="swiper-pagination"></div>
    <div class="swiper-button-next"></div>
    <div class="swiper-button-prev"></div>
  </div>
</template>

<script>
import Swiper from 'vue-awesome-swiper';
import 'swiper/css/swiper.css';

export default {
  name: 'Slideshow',
  props: {
    list: {
      type: Array,
      default: () => [],
    },
  },
  components: {
    Swiper,
  },
  mounted() {
    this.initSwiper();
  },
  methods: {
    initSwiper() {
      new Swiper('.swiper-container', {
        loop: true,
        autoplay: {
          disableOnInteraction: false,
          delay: 3000,
        },
        pagination: {
          el: '.swiper-pagination',
          clickable: true,
        },
        navigation: {
          nextEl: '.swiper-button-next',
          prevEl: '.swiper-button-prev',
        },
      });
    },
  },
};
</script>

<style lang="scss">
.swiper-container {
  width: 100%;
  height: 100%;
  .swiper-pagination {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
  }
  .swiper-button-next,
  .swiper-button-prev {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    cursor: pointer;
    z-index: 20;
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  .swiper-button-next:hover,
  .swiper-button-prev:hover {
    background-color: rgba(0, 0, 0, 0.6);
  }
  .swiper-button-next {
    right: 20px;
  }
  .swiper-button-prev {
    left: 20px;
  }
}
</style>

In this component, we use the vue-awesome-swiper plug-in to achieve the carousel effect. The list property is defined in props and is used to receive carousel chart data. The initSwiper method is called in the mounted hook to initialize the carousel image.

3. Using the carousel component

In the App.vue file, we can use the carousel component we just created:

<template>
  <div id="app">
    <slideshow :list="slideshowList" />
  </div>
</template>

<script>
import Slideshow from './components/Slideshow.vue';

export default {
  name: 'App',
  components: {
    Slideshow,
  },
  data() {
    return {
      slideshowList: [
        { id: 1, src: require('./assets/slideshow1.jpg'), title: '轮播图1' },
        { id: 2, src: require('./assets/slideshow2.jpg'), title: '轮播图2' },
        { id: 3, src: require('./assets/slideshow3.jpg'), title: '轮播图3' },
      ],
    };
  },
};
</script>

<style>
#app {
  text-align: center;
}
</style>

defines an array slideshowList in data to store the data of the carousel. In the template, we use the custom tag slideshow to reference the carousel component and pass slideshowList to the component.

So far, we have successfully implemented a carousel component using Vue. Through this example, we can see Vue's componentization ideas and the use of dependency injection, as well as how to use third-party plug-ins to achieve some complex effects. By implementing the carousel component ourselves, we can also have a deeper understanding of Vue's life cycle and hooks.

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