初心者のための VUE3 入門: Vue.js コンポーネントを使用してウォーターフォール エフェクトを作成する

npm install Vue

npm install --save Vue

vue create myproject

cd myproject

npm run serve

npm install vue-waterfall-easy --save

import waterfall from 'vue-waterfall-easy'
Vue.use(waterfall)

<template>
  <div class="waterfall">
    <div v-for="(item, index) in list" :key="index" :class="'column-'+(index%cols)">
      <div v-for="(innerItem, innerIndex) in item" :key="innerIndex" class="waterfall-item">
        <img :src="innerItem.src">
      </div>
    </div>
  </div>
</template>

<script>
export default {
  name: 'Waterfall',
  props: {
    data: {
      type: Array,
      default: () => []
    },
    cols: {
      type: Number,
      default: 3
    }
  },
  data () {
    return {
      list: []
    }
  },
  created () {
    this.list = this.generateList(this.data, this.cols)
  },
  methods: {
    generateList (data, cols) {
      const list = []
      for (let i = 0; i < cols; i++) {
        list.push([])
      }
      for (let i = 0; i < data.length; i++) {
        const item = data[i]
        const index = i % cols
        list[index].push(item)
      }
      return list
    }
  }
}
</script>

<style>
.waterfall {
  display: flex;
  flex-wrap: wrap;
  margin: -8px 0 0 -8px;
}
.waterfall-item {
  padding: 8px 0 0 8px;
  box-sizing: border-box;
  width: calc(100% / 3 - 8px);
}
</style>

<template>
  <div id="app">
    <waterfall :data="images"></waterfall>
  </div>
</template>

<script>
import Waterfall from './components/Waterfall.vue'

export default {
  name: 'App',
  components: {
    Waterfall
  },
  data () {
    return {
      images: [
        { src: require('@/assets/image1.jpeg') },
        { src: require('@/assets/image2.jpeg') },
        { src: require('@/assets/image3.jpeg') },
        { src: require('@/assets/image4.jpeg') },
        { src: require('@/assets/image5.jpeg') },
        { src: require('@/assets/image6.jpeg') }
      ]
    }
  }
}
</script>