lbk0116/vue-echarts

ECharts component for Vue.js.

Vue-ECharts

ECharts component for Vue.js.

🇨🇳 中文版

Built upon ECharts v4.0.1+ and depends on Vue.js v2.2.6+.

Installation

npm (Recommended)

$ npm install vue-echarts

Manual

Just download dist/vue-echarts.js and include it in your HTML file:

<script src="path/to/vue-echarts/dist/vue-echarts.js"></script>

Usage

ES Modules with npm & vue-loader (Recommended)

import Vue from 'vue'
import ECharts from 'vue-echarts/components/ECharts'

// import ECharts modules manually to reduce bundle size
import 'echarts/lib/chart/bar'
import 'echarts/lib/component/tooltip'

// register component to use
Vue.component('chart', ECharts)

⚠️ Heads up

Importing the souce version

If you are using official Vue CLI to create your project and you want to use the untranspiled component (import vue-echarts/components/ECharts rather than import vue-echarts directly, to optimize bundle size, which is recommended), you'll encounter the problem that the default configuration will exclude node_modules from files to be transpiled by Babel.

For Vue CLI 3+, add vue-echarts and resize-detector into transpileDependencies in vue.config.js like this:

// vue.config.js
module.exports = {
  transpileDependencies: [
    /\bvue-echarts\b/,
    /\bresize-detector\b/
  ]
}

For Vue CLI 2 with the webpack template, modify build/webpack.base.conf.js like this:

      {
        test: /\.js$/,
        loader: 'babel-loader',
-       include: [resolve('src'), resolve('test')]
+       include: [
+         resolve('src'),
+         resolve('test'),
+         resolve('node_modules/vue-echarts'),
+         resolve('node_modules/resize-detector')
+       ]
      }

If you are using bare webpack config, just do similar modifications make it work.

Using with Nuxt.js

When using Vue-ECharts on the server side with Nuxt.js, it may be not properly transpiled because Nuxt.js has configured an external option by default, which prevent files under node_modules from being bundled into the server bundle with only a few exceptions. We need to add vue-echarts into the whitelist as follows:

// Don't forget to
// npm i --save-dev webpack-node-externals
const nodeExternals = require('webpack-node-externals')

module.exports = {
  // ...
  build: {
    extend (config, { isServer }) {
      // ...
      if (isServer) {
        config.externals = [
          nodeExternals({
            // default value for `whitelist` is
            // [/es6-promise|\.(?!(?:js|json)$).{1,5}$/i]
            whitelist: [/es6-promise|\.(?!(?:js|json)$).{1,5}$/i, /^vue-echarts/]
          })
        ]
      }
    }
  }
}

CommonJS with npm

var Vue = require('vue')

// requiring the UMD module
var ECharts = require('vue-echarts')

// or with vue-loader you can require the src directly
// and import ECharts modules manually to reduce bundle size
var ECharts = require('vue-echarts/components/ECharts')
require('echarts/lib/chart/bar')
require('echarts/lib/component/tooltip')

// register component to use

AMD

require.config({
  paths: {
    'vue': 'path/to/vue',
    'vue-echarts': 'path/to/vue-ehcarts'
  }
})

require(['vue', 'vue-echarts'], function (Vue, ECharts) {
  // register component to use...
  Vue.component('chart', ECharts)
})

Global variable

The component is exposed as window.VueECharts.

// register component to use
Vue.component('chart', VueECharts)

Using the component

<template>
<chart :options="polar"/>
</template>

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

<script>
import ECharts from 'vue-echarts/components/ECharts'
import 'echarts/lib/chart/line'
import 'echarts/lib/component/polar'

export default {
  components: {
    chart: ECharts
  },
  data: function () {
    let data = []

    for (let i = 0; i <= 360; i++) {
        let t = i / 180 * Math.PI
        let r = Math.sin(2 * t) * Math.cos(2 * t)
        data.push([r, i])
    }

    return {
      polar: {
        title: {
          text: '极坐标双数值轴'
        },
        legend: {
          data: ['line']
        },
        polar: {
          center: ['50%', '54%']
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross'
          }
        },
        angleAxis: {
          type: 'value',
          startAngle: 0
        },
        radiusAxis: {
          min: 0
        },
        series: [
          {
            coordinateSystem: 'polar',
            name: 'line',
            type: 'line',
            showSymbol: false,
            data: data
          }
        ],
        animationDuration: 2000
      }
    }
  }
}
</script>

See more examples here.

Props (all reactive)

• initOptions

  Used to initialize ECharts instance.

• theme

  The theme used for current ECharts instance.

• options

  Used to update data for ECharts instance. Modifying this prop will trigger ECharts' setOption method.

• group

  This prop is automatically bound to the same prop of the ECharts instance.

• auto-resize (default: false)

  This prop indicates ECharts instance should be resized automatically whenever its root is resized.

• manual-update (default: false)

  For performance critical scenarios (having a large dataset) we'd better bypass Vue's reactivity system for options prop. By specifying manual-update prop with true and not providing options prop, the dataset won't be watched any more. After doing so, you need to retrieve the component instance with ref and manually call mergeOptions method to update the chart.

Computed

• width [readonly]

  Used to retrieve the current width of the ECharts instance.

• height [readonly]

  Used to retrieve the current height of the ECharts instance.

• computedOptions [readonly]

  Used to retrive the actual options calculated by ECharts after updating options.

Methods

• mergeOptions (use setOption in ECharts under the hood)

  Provides a better method name to describe the actual behavior of setOption.

• appendData

• resize

• dispatchAction

• showLoading

• hideLoading

• convertToPixel

• convertFromPixel

• containPixel

• getDataURL

• getConnectedDataURL

• clear

• dispose

Static Methods

• connect
• disconnect
• registerMap
• registerTheme
• graphic.clipPointsByRect
• graphic.clipRectByRect

Events

Vue-ECharts support the following events:

• legendselectchanged
• legendselected
• legendunselected
• legendunscroll
• datazoom
• datarangeselected
• timelinechanged
• timelineplaychanged
• restore
• dataviewchanged
• magictypechanged
• geoselectchanged
• geoselected
• geounselected
• pieselectchanged
• pieselected
• pieunselected
• mapselectchanged
• mapselected
• mapunselected
• axisareaselected
• focusnodeadjacency
• unfocusnodeadjacency
• brush
• brushselected
• rendered
• finished
• Mouse events
  • click
  • dblclick
  • mouseover
  • mouseout
  • mousedown
  • mouseup
  • globalout

For further details, see ECharts' API documentation.

Local development

$ npm i
$ npm run dev

Open http://localhost:8080/demo to see the demo.