一、引入ECharts
1、直接引入echarts (安装echarts项目依赖)
npm install echarts --save
2、全局引入 (我们安装完成之后,可以在main.js中全局引入 echarts)
import echarts from "echarts"; Vue.prototype.$echarts = echarts;
3、我们可以将Echar封装成组件的形式,方便调用
封装在组件中:封装成 Echarts.vue 文件放在ElementUI前端框架中
<template> <div ref="chartDom" ></div> </template> <script> import * as echarts from 'echarts'; import debounce from "lodash/debounce"; import { addListener, removeListener} from "resize-detector"; export default { props: { option: { type: Object, default: ()=> {} } }, watch: { // option(val) { // this.chart.setOption(val); // }, option: { handler(val) { this.chart.setOption(val); }, deep: true } }, created() { this.resize = debounce(this.resize, 300); }, mounted() { this.renderChart(); addListener(this.$refs.chartDom, this.resize); }, beforeDestroy() { removeListener(this.$refs.chartDom, this.resize); this.chart.dispose(); this.chart = null; }, methods:{ resize(){ this.chart.resize(); }, renderChart() { this.chart = echarts.init(this.$refs.chartDom); this.chart.setOption(this.option); } }, } </script> <style> </style>
4、此时我们可以通过Echart官网引入我们需要的图
例如:以所选的折柱混合图为例
引入(需要引入Echarts刚刚封装好的组件)
从Echart官网获取对应图的代码
引入代码:
<template> <div> <el-row> <Echarts :option="option" style="height: 400px;width: 630px" /> </el-row> </div> </template> <script> //引入Echart的包 import Echarts from "../../components/charts/Echarts"; export default { components:{ Echarts, }, data(){ return{ option:{ tooltip: { trigger: 'axis', axisPointer: { type: 'cross', crossStyle: { color: '#999' } } }, toolbox: { feature: { dataView: { show: true, readOnly: false }, magicType: { show: true, type: ['line', 'bar'] }, restore: { show: true }, saveAsImage: { show: true } } }, legend: { data: ['Evaporation', 'Precipitation', 'Temperature'] }, xAxis: [ { type: 'category', data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'], axisPointer: { type: 'shadow' } } ], yAxis: [ { type: 'value', name: 'Precipitation', min: 0, max: 250, interval: 50, axisLabel: { formatter: '{value} ml' } }, { type: 'value', name: 'Temperature', min: 0, max: 25, interval: 5, axisLabel: { formatter: '{value} °C' } } ], series: [ { name: 'Evaporation', type: 'bar', tooltip: { valueFormatter: function (value) { return value + ' ml'; } }, data: [ 2.0, 4.9, 7.0, 23.2, 25.6, 76.7, 135.6, 162.2, 32.6, 20.0, 6.4, 3.3 ] }, { name: 'Precipitation', type: 'bar', tooltip: { valueFormatter: function (value) { return value + ' ml'; } }, data: [ 2.6, 5.9, 9.0, 26.4, 28.7, 70.7, 175.6, 182.2, 48.7, 18.8, 6.0, 2.3 ] }, { name: 'Temperature', type: 'line', yAxisIndex: 1, tooltip: { valueFormatter: function (value) { return value + ' °C'; } }, data: [2.0, 2.2, 3.3, 4.5, 6.3, 10.2, 20.3, 23.4, 23.0, 16.5, 12.0, 6.2] } ] }; }, created: function () { }, methods:{ } } </script> <style scoped> </style>
二、效果展示
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