Getting Started with VUE3 for Beginners: Using Vue.js Components to Create a Waterfall Effect

VUE3 Beginner’s Introduction: Use Vue.js components to create waterfall flow effects

Vue.js is a popular front-end JavaScript framework. Its popularity continues to rise and it has become one of the mainstream front-end frameworks now. . Vue3 is the latest version, which has many improvements in performance and built-in functions. In this article, we will explore how to create a waterfall effect using Vue.js components. If you are a beginner, this article will be very helpful.

Step 1: Install Vue.js

Vue.js can be installed through npm. If you are installing in a global environment, just use the following sentence:

npm install Vue

This command will install Vue.js globally to your machine. If you are using it in a project, you can use the following command:

npm install --save Vue

In this way, Vue.js will be added to the dependencies of your project. Now your environment is ready.

Step 2: Create a new Vue.js project

Open the command line, enter the folder where you want to store the project, and enter the following sentence to create a new Vue.js project:

vue create myproject

This command will create a new project named myproject. After creation, enter the folder where the project is located:

cd myproject

Then run the following command to start your project:

npm run serve

This command will start a local server and display it in the browser Open a page. If you see a Vue.js welcome image, it means you have successfully started your Vue.js project.

Step 3: Install third-party library

In this project, we need to use a third-party library called vue-waterfall-easy to create the waterfall flow effect. This library is very easy to use. You only need to use the following command to install it:

npm install vue-waterfall-easy --save

After the installation is complete, we need to introduce this library in the main.js file:

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

Step 4: Create A waterfall flow component

Now, we need to create a Vue.js component to achieve the waterfall flow effect. Create a Waterfall.vue file under src/components, and then complete the following code:

<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>

We define a component named Waterfall, which will receive two props: data and column number. The component will generate a two-dimensional array based on the incoming data and number of columns, and use the v-for instruction to render the image. This component will ultimately generate a waterfall effect layout.

Step 5: Using components

The last step is to add the component we just created to our App.vue. Add the following code to App.vue:

<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>

We introduced the Waterfall component in App.vue and used the v-for directive to render some images. Now if you start your Vue.js project, you will see a waterfall effect layout.

Summary

In this tutorial, we use the Vue.js component and the third-party library vue-waterfall-easy to implement a waterfall flow effect layout. Vue.js is a popular front-end framework that is very convenient to use on complex web page layouts such as waterfall flows. I hope this article will be helpful to developers who are new to Vue.js.

The above is the detailed content of Getting Started with VUE3 for Beginners: Using Vue.js Components to Create a Waterfall Effect. For more information, please follow other related articles on the PHP Chinese website!