search
HomeWeb Front-endVue.jsLet's talk about the best way to encapsulate echarts in vue3? (detailed code explanation)

项目中经常用到echarts,不做封装直接拿来使用也行,但不可避免要写很多重复的配置代码,封装稍不注意又会过度封装,丢失了扩展性和可读性。始终没有找到一个好的实践,偶然看到一篇文章,给了灵感。找到了一个目前认为用起来很舒服的封装。

思路

  1. 结合项目需求,针对不同类型的图表,配置基础的默认通用配置,例如x/y,label,图例等的样式
  2. 创建图表组件实例(不要使用id,容易重复,还需要操作dom,直接用ref获取当前组件的el来创建图表),提供type(图表类型),和options(图表配置)两个必要属性
  3. 根据传入type,加载默认的图表配置
  4. 深度监听传入的options,变化时更新覆盖默认配置,更新图表
  5. 提供事件支持,支持echart事件按需绑定交互

注意要确保所有传入图表组件的options数组都是shallowReactive类型,避免数组量过大,深度响应式导致性能问题

目录结构

├─v-charts
│  │  index.ts     // 导出类型定义以及图表组件方便使用
│  │  type.d.ts    // 各种图表的类型定义
│  │  useCharts.ts // 图表hooks
│  │  v-charts.vue // echarts图表组件
│  │
│  └─options // 图表配置文件
│          bar.ts
│          gauge.ts
│          pie.ts

组件代码

v-charts.vue

<template>
  <div></div>
</template>
<script>
import { PropType } from "vue";
import * as echarts from "echarts/core";
import { useCharts, ChartType, ChartsEvents } from "./useCharts";

/**
 * echarts事件类型
 * 截至目前,vue3类型声明参数必须是以下内容之一,暂不支持外部引入类型参数
 * 1. 类型字面量
 * 2. 在同一文件中的接口或类型字面量的引用
 * // 文档中有说明:https://cn.vuejs.org/api/sfc-script-setup.html#typescript-only-features
 */
interface EventEmitsType {
  <T extends ChartsEvents.EventType>(e: `${T}`, event: ChartsEvents.Events[Uncapitalize<T>]): void;
}

defineOptions({
  name: "VCharts"
});

const props = defineProps({
  type: {
    type: String as PropType<ChartType>,
    default: "bar"
  },
  options: {
    type: Object as PropType<echarts.EChartsCoreOption>,
    default: () => ({})
  }
});

// 定义事件,提供ts支持,在组件使用时可获得友好提示
defineEmits<EventEmitsType>();

const { type, options } = toRefs(props);
const chartRef = shallowRef();
const { charts, setOptions, initChart } = useCharts({ type, el: chartRef });

onMounted(async () => {
  await initChart();
  setOptions(options.value);
});
watch(
  options,
  () => {
    setOptions(options.value);
  },
  {
    deep: true
  }
);
defineExpose({
  $charts: charts
});
</script>
<style>
.v-charts {
  width: 100%;
  height: 100%;
  min-height: 200px;
}
</style>

useCharts.ts

import { ChartType } from "./type";
import * as echarts from "echarts/core";
import { ShallowRef, Ref } from "vue";

import {
  TitleComponent,
  LegendComponent,
  TooltipComponent,
  GridComponent,
  DatasetComponent,
  TransformComponent
} from "echarts/components";

import { BarChart, LineChart, PieChart, GaugeChart } from "echarts/charts";

import { LabelLayout, UniversalTransition } from "echarts/features";
import { CanvasRenderer } from "echarts/renderers";

const optionsModules = import.meta.glob("./options/**.ts");

interface ChartHookOption {
  type?: Ref<charttype>;
  el: ShallowRef<htmlelement>;
}

/**
 *  视口变化时echart图表自适应调整
 */
class ChartsResize {
  #charts = new Set<echarts.echarts>(); // 缓存已经创建的图表实例
  #timeId = null;
  constructor() {
    window.addEventListener("resize", this.handleResize.bind(this)); // 视口变化时调整图表
  }
  getCharts() {
    return [...this.#charts];
  }
  handleResize() {
    clearTimeout(this.#timeId);
    this.#timeId = setTimeout(() => {
      this.#charts.forEach(chart => {
        chart.resize();
      });
    }, 500);
  }
  add(chart: echarts.ECharts) {
    this.#charts.add(chart);
  }
  remove(chart: echarts.ECharts) {
    this.#charts.delete(chart);
  }
  removeListener() {
    window.removeEventListener("resize", this.handleResize);
  }
}

export const chartsResize = new ChartsResize();

export const useCharts = ({ type, el }: ChartHookOption) => {
  echarts.use([
    BarChart,
    LineChart,
    BarChart,
    PieChart,
    GaugeChart,
    TitleComponent,
    LegendComponent,
    TooltipComponent,
    GridComponent,
    DatasetComponent,
    TransformComponent,
    LabelLayout,
    UniversalTransition,
    CanvasRenderer
  ]);
  const charts = shallowRef<echarts.echarts>();
  let options!: echarts.EChartsCoreOption;
  const getOptions = async () => {
    const moduleKey = `./options/${type.value}.ts`;
    const { default: defaultOption } = await optionsModules[moduleKey]();
    return defaultOption;
  };

  const setOptions = (opt: echarts.EChartsCoreOption) => {
    charts.value.setOption(opt);
  };
  const initChart = async () => {
    charts.value = echarts.init(el.value);
    options = await getOptions();
    charts.value.setOption(options);
    chartsResize.add(charts.value); // 将图表实例添加到缓存中
    initEvent(); // 添加事件支持
  };

  /**
   * 初始化事件,按需绑定事件
   */
  const attrs = useAttrs();
  const initEvent = () => {
    Object.keys(attrs).forEach(attrKey => {
      if (/^on/.test(attrKey)) {
        const cb = attrs[attrKey];
        attrKey = attrKey.replace(/^on(Chart)?/, "");
        attrKey = `${attrKey[0]}${attrKey.substring(1)}`;
        typeof cb === "function" && charts.value?.on(attrKey, cb as () => void);
      }
    });
  };

  onBeforeUnmount(() => {
    chartsResize.remove(charts.value); // 移除缓存
  });

  return {
    charts,
    setOptions,
    initChart,
    initEvent
  };
};

export const chartsOptions = <t>(option: T) => shallowReactive<t>(option);

export * from "./type.d";</t></t></echarts.echarts></echarts.echarts></htmlelement></charttype>

type.d.ts

/*
 * @Description:
 * @Version: 2.0
 * @Autor: GC
 * @Date: 2022-03-02 10:21:33
 * @LastEditors: GC
 * @LastEditTime: 2022-06-02 17:45:48
 */
// import * as echarts from 'echarts/core';
import * as echarts from 'echarts'
import { XAXisComponentOption, YAXisComponentOption } from 'echarts';

import { ECElementEvent, SelectChangedPayload, HighlightPayload,  } from 'echarts/types/src/util/types'

import {
  TitleComponentOption,
  TooltipComponentOption,
  GridComponentOption,
  DatasetComponentOption,
  AriaComponentOption,
  AxisPointerComponentOption,
  LegendComponentOption,
} from 'echarts/components';// 组件
import {
  // 系列类型的定义后缀都为 SeriesOption
  BarSeriesOption,
  LineSeriesOption,
  PieSeriesOption,
  FunnelSeriesOption,
  GaugeSeriesOption
} from 'echarts/charts';

type Options = LineECOption | BarECOption | PieECOption | FunnelOption

type BaseOptionType = XAXisComponentOption | YAXisComponentOption | TitleComponentOption | TooltipComponentOption | LegendComponentOption | GridComponentOption

type BaseOption = echarts.ComposeOption<baseoptiontype>

type LineECOption = echarts.ComposeOption<lineseriesoption>

type BarECOption = echarts.ComposeOption<barseriesoption>

type PieECOption = echarts.ComposeOption<pieseriesoption>

type FunnelOption = echarts.ComposeOption<funnelseriesoption>

type GaugeECOption = echarts.ComposeOption<gaugeseriesoption>

type EChartsOption = echarts.EChartsOption;

type ChartType = 'bar' | 'line' | 'pie' | 'gauge'

// echarts事件
namespace ChartsEvents {
  // 鼠标事件类型
  type MouseEventType = 'click' | 'dblclick' | 'mousedown' | 'mousemove' | 'mouseup' | 'mouseover' | 'mouseout' | 'globalout' | 'contextmenu' // 鼠标事件类型
  type MouseEvents = {
    [key in Exclude<mouseeventtype> as `chart${Capitalize<key>}`] :ECElementEvent
  }
  // 其他的事件类型极参数
  interface Events extends MouseEvents {
    globalout:ECElementEvent,
    contextmenu:ECElementEvent,
    selectchanged: SelectChangedPayload;
    highlight: HighlightPayload;
    legendselected: { // 图例选中后的事件
      type: 'legendselected',
      // 选中的图例名称
      name: string
      // 所有图例的选中状态表
      selected: {
        [name: string]: boolean
      }
    };
    // ... 其他类型的事件在这里定义
  }


  // echarts所有的事件类型
  type EventType = keyof Events
}

export {
  BaseOption,
  ChartType,
  LineECOption,
  BarECOption,
  Options,
  PieECOption,
  FunnelOption,
  GaugeECOption,
  EChartsOption,
  ChartsEvents
}</key></mouseeventtype></gaugeseriesoption></funnelseriesoption></pieseriesoption></barseriesoption></lineseriesoption></baseoptiontype>

options/bar.ts

import { BarECOption } from "../type";
const options: BarECOption = {
  legend: {},
  tooltip: {},
  xAxis: {
    type: "category",
    axisLine: {
      lineStyle: {
        // type: "dashed",
        color: "#C8D0D7"
      }
    },
    axisTick: {
      show: false
    },
    axisLabel: {
      color: "#7D8292"
    }
  },
  yAxis: {
    type: "value",
    alignTicks: true,
    splitLine: {
      show: true,
      lineStyle: {
        color: "#C8D0D7",
        type: "dashed"
      }
    },
    axisLine: {
      lineStyle: {
        color: "#7D8292"
      }
    }
  },
  grid: {
    left: 60,
    bottom: "8%",
    top: "20%"
  },
  series: [
    {
      type: "bar",
      barWidth: 20,
      itemStyle: {
        color: {
          type: "linear",
          x: 0,
          x2: 0,
          y: 0,
          y2: 1,
          colorStops: [
            {
              offset: 0,
              color: "#62A5FF" // 0% 处的颜色
            },
            {
              offset: 1,
              color: "#3365FF" // 100% 处的颜色
            }
          ]
        }
      }
      // label: {
      //   show: true,
      //   position: "top"
      // }
    }
  ]
};
export default options;

项目中使用

index.vue

<template>
  <div>
    <section>
      <div>
        <div>累计设备接入统计</div>
        <v-charts></v-charts>
      </div>
      <div>
        <div>坐标数据接入统计</div>
        <v-charts></v-charts>
      </div>
    </section>
  </div>
</template>
<script>
import {
  useStatisDeviceByUserObject,
} from "./hooks";
// 设备分类统计
const { options: statisDeviceByUserObjectOpts,selectchanged,handleChartClick } = useStatisDeviceByUserObject();
</script>

/hooks/useStatisDeviceByUserObject.ts

export const useStatisDeviceByUserObject = () => {
  // 使用chartsOptions确保所有传入v-charts组件的options数据都是## shallowReactive浅层作用形式,避免大量数据导致性能问题
  const options = chartsOptions<barecoption>({
    yAxis: {},
    xAxis: {},
    series: []
  });
  const init = async () => {
    const xData = [];
    const sData = [];
    const dicts = useHashMapDics(["dev_user_object"]);
    const data = await statisDeviceByUserObject();
    dicts.dictionaryMap.dev_user_object.forEach(({ label, value }) => {
      if (value === "6") return; // 排除其他
      xData.push(label);
      const temp = data.find(({ name }) => name === value);
      sData.push(temp?.qty || 0);
      
      // 给options赋值时要注意options是浅层响应式
      options.xAxis = { data: xData }; 
      options.series = [{ ...options.series[0], data: sData }];
    });
  };
  
  // 事件
  const selectchanged = (params: ChartsEvents.Events["selectchanged"]) => {
    console.log(params, "选中图例了");
  };

  const handleChartClick = (params: ChartsEvents.Events["chartClick"]) => {
    console.log(params, "点击了图表");
  };
  
  onMounted(() => {
    init();
  });
  return {
    options,
    selectchanged,
    handleChartClick
  };
};</barecoption>

使用时输入@可以看到组件支持的所有事件:

Lets talk about the best way to encapsulate echarts in vue3? (detailed code explanation)

The above is the detailed content of Let's talk about the best way to encapsulate echarts in vue3? (detailed code explanation). For more information, please follow other related articles on the PHP Chinese website!

Statement
This article is reproduced at:juejin. If there is any infringement, please contact admin@php.cn delete
Netflix's Frontend: Examples and Applications of React (or Vue)Netflix's Frontend: Examples and Applications of React (or Vue)Apr 16, 2025 am 12:08 AM

Netflix uses React as its front-end framework. 1) React's componentized development model and strong ecosystem are the main reasons why Netflix chose it. 2) Through componentization, Netflix splits complex interfaces into manageable chunks such as video players, recommendation lists and user comments. 3) React's virtual DOM and component life cycle optimizes rendering efficiency and user interaction management.

The Frontend Landscape: How Netflix Approached its ChoicesThe Frontend Landscape: How Netflix Approached its ChoicesApr 15, 2025 am 12:13 AM

Netflix's choice in front-end technology mainly focuses on three aspects: performance optimization, scalability and user experience. 1. Performance optimization: Netflix chose React as the main framework and developed tools such as SpeedCurve and Boomerang to monitor and optimize the user experience. 2. Scalability: They adopt a micro front-end architecture, splitting applications into independent modules, improving development efficiency and system scalability. 3. User experience: Netflix uses the Material-UI component library to continuously optimize the interface through A/B testing and user feedback to ensure consistency and aesthetics.

React vs. Vue: Which Framework Does Netflix Use?React vs. Vue: Which Framework Does Netflix Use?Apr 14, 2025 am 12:19 AM

Netflixusesacustomframeworkcalled"Gibbon"builtonReact,notReactorVuedirectly.1)TeamExperience:Choosebasedonfamiliarity.2)ProjectComplexity:Vueforsimplerprojects,Reactforcomplexones.3)CustomizationNeeds:Reactoffersmoreflexibility.4)Ecosystema

The Choice of Frameworks: What Drives Netflix's Decisions?The Choice of Frameworks: What Drives Netflix's Decisions?Apr 13, 2025 am 12:05 AM

Netflix mainly considers performance, scalability, development efficiency, ecosystem, technical debt and maintenance costs in framework selection. 1. Performance and scalability: Java and SpringBoot are selected to efficiently process massive data and high concurrent requests. 2. Development efficiency and ecosystem: Use React to improve front-end development efficiency and utilize its rich ecosystem. 3. Technical debt and maintenance costs: Choose Node.js to build microservices to reduce maintenance costs and technical debt.

React, Vue, and the Future of Netflix's FrontendReact, Vue, and the Future of Netflix's FrontendApr 12, 2025 am 12:12 AM

Netflix mainly uses React as the front-end framework, supplemented by Vue for specific functions. 1) React's componentization and virtual DOM improve the performance and development efficiency of Netflix applications. 2) Vue is used in Netflix's internal tools and small projects, and its flexibility and ease of use are key.

Vue.js in the Frontend: Real-World Applications and ExamplesVue.js in the Frontend: Real-World Applications and ExamplesApr 11, 2025 am 12:12 AM

Vue.js is a progressive JavaScript framework suitable for building complex user interfaces. 1) Its core concepts include responsive data, componentization and virtual DOM. 2) In practical applications, it can be demonstrated by building Todo applications and integrating VueRouter. 3) When debugging, it is recommended to use VueDevtools and console.log. 4) Performance optimization can be achieved through v-if/v-show, list rendering optimization, asynchronous loading of components, etc.

Vue.js and React: Understanding the Key DifferencesVue.js and React: Understanding the Key DifferencesApr 10, 2025 am 09:26 AM

Vue.js is suitable for small to medium-sized projects, while React is more suitable for large and complex applications. 1. Vue.js' responsive system automatically updates the DOM through dependency tracking, making it easy to manage data changes. 2.React adopts a one-way data flow, and data flows from the parent component to the child component, providing a clear data flow and an easy-to-debug structure.

Vue.js vs. React: Project-Specific ConsiderationsVue.js vs. React: Project-Specific ConsiderationsApr 09, 2025 am 12:01 AM

Vue.js is suitable for small and medium-sized projects and fast iterations, while React is suitable for large and complex applications. 1) Vue.js is easy to use and is suitable for situations where the team is insufficient or the project scale is small. 2) React has a richer ecosystem and is suitable for projects with high performance and complex functional needs.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Chat Commands and How to Use Them
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

Powerful PHP integrated development environment

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

Atom editor mac version download

Atom editor mac version download

The most popular open source editor