Vue and ECharts4Taro3 development practice: how to build a reusable data visualization component library

Vue and ECharts4Taro3 Development Practice: How to Build a Reusable Data Visualization Component Library

In recent years, as the importance of data visualization has gradually become more prominent, front-end developers have become more interested in building reusable data visualization components. The demand for libraries is also increasing. In this article, we will combine Vue and ECharts4Taro3 for development practice and teach you how to build a reusable data visualization component library.

1. Build the project
First, we need to create a Vue project and install ECharts4Taro3 and the corresponding dependency packages.

npm install -g @tarojs/cli
taro init echarts-demo
cd echarts-demo
npm install echarts4taro3 --save
npm install vue-router --save
npm install vant --save

2. Create a reusable data visualization component
Next, we will create a reusable data visualization component. First, create a components directory under the src directory, and then create an ECharts directory under the components directory. Create an ECharts.vue file in the ECharts directory to write the code for the ECharts component.

<template>
  <div class="echarts">
    <canvas id="echarts" style="width: 100%; height: 100%;"></canvas>
  </div>
</template>

<script>
import { onMounted, reactive } from 'vue'
import * as echarts from 'echarts4taro3'

export default {
  name: 'ECharts',
  setup() {
    const chartData = reactive({
      option: {
        title: {
          text: 'ECharts 示例',
        },
        xAxis: {
          type: 'category',
          data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
        },
        yAxis: {
          type: 'value',
        },
        series: [
          {
            data: [820, 932, 901, 934, 1290, 1330, 1320],
            type: 'bar',
          },
        ],
      },
    })

    onMounted(() => {
      const chartDom = document.getElementById('echarts')
      const myChart = echarts.init(chartDom)
      myChart.setOption(chartData.option)
    })

    return {
      chartData,
    }
  },
}
</script>

<style scoped>
.echarts {
  width: 100%;
  height: 100%;
}
</style>

3. Use ECharts component
Next, we will use ECharts component in App.vue. First, we need to introduce the ECharts component in App.vue.

<template>
  <div class="app">
    <ECharts />
  </div>
</template>

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

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

<style>
.app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
</style>

4. Compile and run the project
After completing the above steps, we can compile and run the project.

npm run dev:weapp

The above is the practical process of using Vue and ECharts4Taro3 to build a reusable data visualization component library. Through the above steps, we can create a reusable ECharts component and use it in App.vue. This way we can quickly develop various data visualization components and reuse them in different projects.

Summary
This article teaches you how to build a reusable data visualization component library through the development practice of Vue and ECharts4Taro3. Through the above steps, we can quickly create and use various data visualization components, and reuse these components in different projects to improve development efficiency. I hope this article is helpful to you, and I wish you can write a better data visualization component library!

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