How to use Vue to implement rainbow chart CSS animation?

Vue is a popular Javascript framework that has become one of the preferred frameworks for developing web applications. One of the reasons is that Vue developers can easily use CSS animations along with many other powerful animation libraries to help achieve amazing user experiences. Implementing rainbow chart CSS animation in Vue may seem difficult, but in this article, we will show you that it can be achieved easily. Here are some steps and methods.

Step 1: Install Vue CLI

To start using Vue to implement rainbow animation, you first need to install Vue CLI. Vue CLI is a command line interface tool that can be used to quickly create new Vue projects. You can install the Vue CLI by typing the following command in the terminal:

npm install -g vue-cli

Step 2: Create a new Vue project

After installing the Vue CLI, you can use the following command to create a new Vue project:

vue init webpack my-project

This command will generate a new Vue project using the Webpack template and generate a folder named "my-project".

Step 3: Install required packages

Continue using the terminal and enter the project folder (cd my-project). Install the required npm packages using the following command:

npm install vue-lottie@0.2.6 animate.css@3.7.2

• vue-lottie: can help us create and manage Lottie animations
• animate.css : We will use its animation library to add CSS animation effects

Step 4: Add Lottie JSON file

Lottie is a library for rendering Adobe After Effects animations . Using Lottie, developers can export After Effects animations to JSON files for use in web applications. In this example, we will use a Lottie JSON file to animate a rainbow chart. You can download various Lottie animations for free from [LottieFiles](https://lottiefiles.com/).

Save the downloaded Lottie JSON file in the src/assets directory.

Step 5: Create Vue component

Create a new Vue component named "Rainbow.vue" in the src/components directory. Add the following code to the Rainbow.vue file:

<template>
  <div class="rainbow-container">
    <lottie-animation :animation-data="lottieAnimation" />
  </div>
</template>

<script>
import LottieAnimation from 'vue-lottie'
import rainbowAnimation from '@/assets/rainbow.json'
import 'animate.css/animate.css'

export default {
  name: 'Rainbow',
  components: {
    LottieAnimation
  },
  data() {
    return {
      lottieAnimation: null
    }
  },
  mounted() {
    this.lottieAnimation = rainbowAnimation
  }
}
</script>

<style lang="scss">
.rainbow-container {
  width: 100%;
  height: 50vh;
  display: flex;
  justify-content: center;
  align-items: center;

  .lottie-player {
    width: 50%;
    height: 50%;
    transform: scale(0.5);
    filter: drop-shadow(0px 0px 10px rgba(255, 255, 255, 0.8));

    &.animated {
      animation-duration: 7s;
      animation-iteration-count: infinite;
      animation-name: rainbow-animation;
    }
  }

  @keyframes rainbow-animation {
    0% {
      filter: drop-shadow(0px 0px 10px rgba(255, 0, 0, 0.8));
    }
    16% {
      filter: drop-shadow(0px 0px 10px rgba(255, 0, 0, 0.8));
    }
    33% {
      filter: drop-shadow(0px 0px 10px rgba(255, 165, 0, 0.8));
    }
    50% {
      filter: drop-shadow(0px 0px 10px rgba(255, 255, 0, 0.8));
    }
    66% {
      filter: drop-shadow(0px 0px 10px rgba(0, 128, 0, 0.8));
    }
    83% {
      filter: drop-shadow(0px 0px 10px rgba(0, 0, 255, 0.8));
    }
    100% {
      filter: drop-shadow(0px 0px 10px rgba(238, 130, 238, 0.8));
    }
  }
}
</style>

In the above code, we use the Lottie Animation component to render the Lottie animation, and use the require function to introduce the downloaded Lottie JSON file into the Vue component. We also introduced the animate.css library into the component, so all animate.css animations can be used in CSS.

Specify the lottieAnimation declaration as an empty object so that the correct animation is assigned in the mounted lifecycle hook, and then specify the animation-data property in the Lottie Animation component. Finally, create a CSS animation named "rainbow-animation" and apply it to the Lottie Animation component.

Step 6: Add the component to App.vue

Now we can add the Rainbow component to our application. Edit the App.vue file and add the following code:

<template>
  <div id="app">
    <Rainbow />
  </div>
</template>

<script>
import Rainbow from '@/components/Rainbow.vue'

export default {
  name: 'App',
  components: {
    Rainbow
  }
}
</script>

Here, we import the Rainbow component and use it in #app.

Step 7: Run the application

Now you can run the application on localhost:8080 using the npm run serve command.

Open this URL in your browser and you will see a beautiful rainbow animation effect!

Summary

Implementing a rainbow chart CSS animation using Vue may seem tricky, but using the Vue CLI and a few tools and libraries, it can be a breeze. In this article, we installed the Vue CLI and some required npm packages, added the LottieJSON file and CSS animations to the Vue component, and used it in the App.vue file. Now you can see amazing rainbow animation effects in the app.

The above is the detailed content of How to use Vue to implement rainbow chart CSS animation?. For more information, please follow other related articles on the PHP Chinese website!