Vue + Echarts(v5.版本)的简单组件封装（折线图、柱状图、散点图、饼/环形图、仪表盘、雷达图）
项目中展示图表的地方很多，不想每次都写一长串的 options配置，就整合了一下常用的配置项，简单封装了一下，也能保证整个系统的图表风格统一，需要调整样式的时候也不用改很多地方
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项目中展示图表的地方很多，不想每次都写一长串的 options配置，就整合了一下常用的配置项，简单封装了一下，也能保证整个系统的图表风格统一，需要调整样式的时候也不用改很多地方
2022-11-07：legendData 改为数组，以支持多 legend的场景；添加 dataZoom组件
一、效果图（数据不足，示例图可能比较秃）
| 折线图 |  | 柱状图 |  |
| 散点图 |  | 饼图 |  |
| 环形图 |  | 嵌套环形图 |  |
| 仪表盘 |  | 雷达图 |  |
二、代码
文件目录结构
* mixin文件：Chart.js
/*
echarts组件封装
id:元素id ，唯一
chartStyle:容器样式
colors:颜色
legendData:图例
seriesData:所需数据
xData:X轴显示的数据
yData:Y轴显示的数据
*/
export default {
props: {
// 此处id切记不可传重复
id: {
type: String,
default: '',
},
// 样式
chartStyle: {
type: Object,
default: () => {},
},
// 标题
titleData: {
type: Object,
default: () => {},
},
// 副标题
subtitleData: {
type: Object,
default: () => {},
},
// 网格
gridData: {
type: Object,
default: () => {},
},
// 颜色
colors: {
type: Array,
default: () => [],
},
// 提示框
tooltipData: {
type: Object,
default: () => {},
},
// 图例
legendData: {
type: Array,
default: () => [],
},
// series
seriesData: {
type: Array,
default: () => [],
},
// x 轴
xData: {
type: Array,
default: () => [],
},
// x 轴样式
xStyle: {
type: Object,
default: () => {},
},
// y 轴
yData: {
type: Array,
default: () => [],
},
// 缩放
dataZoomData: {
type: Array,
default: () => [],
},
// 是否有点击事件
clickable: {
type: Boolean,
default: false,
},
},
data() {
return {
chartsDom: null,
option: null,
resizeTimer: null,
tooltipConfig: {
backgroundColor: 'rgba(0, 0, 0, 0.7)',
borderColor: '#333',
// borderRadius: 10,
borderWidth: 0,
shadow: false,
textStyle: {
color: '#FFFFFF',
fontSize: 12,
},
},
};
},
watch: {
// 监听 series变化
seriesData: {
handler(newVal) {
if (newVal) {
this.$nextTick(() => {
if (this.chartsDom) {
// 先销毁，释放内存
this.chartsDom.dispose();
}
this.init();
});
}
},
deep: true, // 对象内部属性的监听，关键。
},
},
mounted() {
// 部分暂时隐藏的 chart图，在显示的时候监听不到 seriesData的变化，需由 mounted来调用
this.$nextTick(() => {
if (this.chartsDom) {
// 先销毁，释放内存
this.chartsDom.dispose();
}
this.init();
});
window.addEventListener('resize', this.resize);
},
beforeDestroy() {
// 解除监听
window.removeEventListener('resize', this.resize);
// 销毁 echart实例
if (this.chartsDom) {
this.chartsDom.dispose();
}
},
methods: {
// 尺寸变化自适应
resize() {
if (this.resizeTimer) { clearTimeout(this.resizeTimer); }
this.resizeTimer = setTimeout(() => { this.chartsDom.resize(); }, 200);
},
},
};
>> 折线图：LineChart.vue
<template>
<div :id="id" :style="chartStyle"></div>
</template>
<script>
import Chart from './mixins/Chart';
export default {
mixins: [Chart],
props: {},
data() {
return {
};
},
methods: {
init() {
this.chartsDom = this.$echarts.init(document.getElementById(this.id));
// 每次数据更新都清空一次实例，以便页面重新渲染，否则更新数据没有变化，页面看起来像没动
document.getElementById(this.id).removeAttribute('_echarts_instance_');
this.option = {
grid: {
left: 0,
right: 20, // 设置 0的话最后一个x轴标签会被截断
top: 35',
bottom: (this.dataZoomData && this.dataZoomData.length) ? 50 : 0,
containLabel: true,
...this.gridData,
},
tooltip: {
trigger: 'axis',
...this.tooltipConfig,
...this.tooltipData,
},
legend: this.legendData.map((v) => ({
top: 0,
right: 0,
icon: 'rect',
itemWidth: 8,
itemHeight: 8,
itemGap: 12,
textStyle: {
fontSize: 12,
color: '#455A74',
},
...v,
})),
dataZoom: [...this.dataZoomData],
color: this.colors,
xAxis: [
{
type: 'category',
boundaryGap: false,
axisTick: { // 刻度点
lineStyle: {
color: 'rgba(45, 62, 83, 0.45)',
},
},
data: this.xData,
axisLabel: {
interval: 'auto',
rotate: 0, // 旋转角度
margin: 12, // 标签文字到轴的距离
align: 'center',
lineHeight: 17,
color: '#455A74',
},
axisLine: {
lineStyle: {
color: 'rgba(45, 62, 83, 0.45)',
},
},
...this.xStyle,
},
],
yAxis: this.yData.length === 0 ? [] : this.yData.map((item) => (
{
type: 'value',
nameTextStyle: {
color: '#455A74',
align: 'left',
},
// min: 'dataMin',
splitLine: {
show: true,
lineStyle: {
color: 'rgba(45, 62, 83, 0.15)',
type: 'dashed',
},
},
axisLine: {
show: false,
},
axisTick: false,
axisLabel: {
color: '#455A74',
// margin: 12,
},
...item,
}
)),
series: this.seriesData.map((item, index) => (
{
type: 'line',
showSymbol: false,
areaStyle: {
color: {
type: 'linear',
x: 0,
y: 0,
x2: 0,
y2: 1,
colorStops: this.getColorStopsByColor(this.colors[index]),
global: false, // 缺省为 false
},
},
...item,
}
)),
};
this.chartsDom.setOption(this.option);
// 绑定点击事件
this.chartsDom.on('click', (param) => {
this.$emit('chartClick', param);
});
},
getColorStopsByColor(color) {
let color0;
let color1;
switch (color) {
case '#169BFA':
color0 = 'rgba(22, 155, 250, 0.3)';
color1 = 'rgba(22, 155, 250, 0)';
break;
case '#31CF9A':
color0 = 'rgba(49, 207, 154, 0.3)';
color1 = 'rgba(49, 207, 154, 0)';
break;
case '#FBAD3B':
color0 = 'rgba(251, 173, 59, 0.3)';
color1 = 'rgba(251, 173, 59, 0)';
break;
default:
color0 = 'rgba(255, 255, 255, 0)';
color1 = 'rgba(255, 255, 255, 0)';
break;
}
const colorStops = [{
offset: 0, color: color0, // 0% 处的颜色
}, {
offset: 1, color: color1, // 100% 处的颜色
}];
return colorStops;
},
},
};
</script>
【使用示例】
<template>
<LineChart id="myLine" v-bind="myLine" />
</template>
<script>
import LineChart from '@/components/Charts/LineChart';
export default {
components: { LineChart },
data() {
return {
myLine: {
chartStyle: {
height: '220px',
},
colors: ['#169BFA', '#FBAD3B', '#31CF9A'],
legendData: [{ data: ['line1', 'line2', 'line3'] }],
xData: ['2022-07-01 10:00', '2022-07-01 10:30', '2022-07-01 11:00', '2022-07-01 11:30'],
xStyle: {
axisLabel: {
formatter: (params) => params.substr(5),
},
},
yData: [{ name: '单位：xx' }],
seriesData: [
{ name: 'line1', data: [20, 50, 70, 100] },
{ name: 'line2', data: [30, 60, 90, 40] },
{ name: 'line3', data: [80, 40, 70, 20] },
],
},
};
},
</script>
>> 柱状图：BarChart.vue（其实这里的柱状图和折线图都是二维坐标图，很多配置都是相似的，可以合并）
<template>
<div :id="id" :style="chartStyle"></div>
</template>
<script>
import Chart from './mixins/Chart';
export default {
mixins: [Chart],
props: {},
data() {
return {
};
},
methods: {
init() {
this.chartsDom = this.$echarts.init(document.getElementById(this.id));
// 每次数据更新都清空一次实例，以便页面重新渲染，否则更新数据没有变化，页面看起来像没动
document.getElementById(this.id).removeAttribute('_echarts_instance_');
this.option = {
grid: {
left: 0,
right: 20,
top: 35,
bottom: (this.dataZoomData && this.dataZoomData.length) ? 50 : 0,
containLabel: true,
...this.gridData,
},
tooltip: {
trigger: 'axis',
...this.tooltipConfig,
...this.tooltipData,
},
legend: this.legendData.map((v) => ({
top: 0,
right: 0,
icon: 'rect',
itemWidth: 8,
itemHeight: 8,
itemGap: 12,
textStyle: {
fontSize: 12,
color: '#455A74',
},
...v,
})),
dataZoom: [...this.dataZoomData],
color: this.colors,
xAxis: [
{
type: 'category',
boundaryGap: true,
axisTick: { // 刻度点
lineStyle: {
color: 'rgba(45, 62, 83, 0.45)',
},
},
data: this.xData,
axisLabel: {
interval: 'auto',
rotate: 0, // 旋转角度
margin: 12, // 标签文字到轴的距离
align: 'center',
lineHeight: 17,
color: '#455A74',
},
axisLine: {
lineStyle: {
color: 'rgba(45, 62, 83, 0.45)',
},
},
...this.xStyle,
},
],
yAxis: this.yData.length === 0 ? [] : this.yData.map((item) => (
{
type: 'value',
nameTextStyle: {
color: '#455A74',
},
splitLine: {
show: true,
lineStyle: {
color: 'rgba(45, 62, 83, 0.15)',
type: 'dashed',
},
},
axisLine: {
show: false,
},
axisTick: false,
axisLabel: {
color: '#455A74',
// margin: 12,
},
...item,
}
)),
series: this.seriesData.map((item) => (
{
barWidth: 16,
type: 'bar',
...item,
}
)),
};
this.chartsDom.setOption(this.option);
// 绑定点击事件
this.chartsDom.on('click', (param) => {
this.$emit('chartClick', param);
});
},
},
};
</script>
【使用示例】
（与折线图类似）
>> 散点图：ScatterChart.vue（其实与折线图、柱状图的配置差不多，只是数据格式略有差异）
<template>
<div :id="id" :style="chartStyle"></div>
</template>
<script>
import Chart from './mixins/Chart';
export default {
mixins: [Chart],
props: {},
data() {
return {
};
},
methods: {
init() {
this.chartsDom = this.$echarts.init(document.getElementById(this.id));
// 每次数据更新都清空一次实例，以便页面重新渲染，否则更新数据没有变化，页面看起来像没动
document.getElementById(this.id).removeAttribute('_echarts_instance_');
this.option = {
grid: {
left: 0,
right: 80, // 设置 0的话最后一个x轴标签会被截断
top: 35,
bottom: 0,
containLabel: true,
...this.gridData,
},
tooltip: {
trigger: 'axis',
...this.tooltipConfig,
...this.tooltipData,
},
legend: this.legendData.map((v) => ({
top: 0,
right: 0,
icon: 'rect',
itemWidth: 8,
itemHeight: 8,
itemGap: 12,
textStyle: {
fontSize: 12,
color: '#455A74',
},
...v,
})),
color: this.colors,
xAxis: [
{
type: 'value',
min: 'dataMin',
boundaryGap: false,
axisTick: { // 刻度点
lineStyle: {
color: 'rgba(45, 62, 83, 0.45)',
},
},
axisLabel: {
interval: 'auto',
rotate: 0, // 旋转角度
margin: 12, // 标签文字到轴的距离
align: 'center',
lineHeight: 17,
color: '#455A74',
},
axisLine: {
lineStyle: {
color: 'rgba(45, 62, 83, 0.45)',
},
},
...this.xStyle,
},
],
yAxis: this.yData.length === 0 ? [] : this.yData.map((item) => (
{
type: 'value',
min: 'dataMin',
nameTextStyle: {
color: '#455A74',
align: 'left',
},
splitLine: {
show: true,
lineStyle: {
color: 'rgba(45, 62, 83, 0.15)',
type: 'dashed',
},
},
axisLine: {
show: false,
},
axisTick: false,
axisLabel: {
color: '#455A74',
},
...item,
}
)),
series: this.seriesData.map((item, index) => (
{
type: 'scatter',
...item,
}
)),
};
this.chartsDom.setOption(this.option);
// 绑定点击事件
this.chartsDom.on('click', (param) => {
this.$emit('chartClick', param);
});
},
},
};
</script>
【使用示例】
<template>
<ScatterChart id="myScatter" v-bind="myScatter" />
</template>
<script>
import ScatterChart from '@/components/Charts/ScatterChart';
export default {
components: { ScatterChart },
data() {
return {
myScatter: {
chartStyle: {
height: '220px',
},
colors: ['#169BFA', '#31CF9A'],
legendData: [{ data: ['scatter1', 'scatte2'] }],
xStyle: { name: '单位：xx' },
yData: [{ name: '单位：yy' }],
seriesData: [
{
name: 'scatter1',
data: [
[174, 65.6],
[175.3, 71.8],
[193.5, 80.7],
[186.5, 72.6],
[187.2, 78.8],
[181.5, 74.8],
[184, 86.4],
[184.5, 78.4],
[175, 62],
[184, 81.6],
[180, 76.6],
[177.8, 83.6],
],
},
{
name: 'scatter2',
data: [
[175, 62],
[184, 81.6],
[180, 76.6],
[177.8, 83.6],
[192, 90],
[176, 74.6],
[174, 71],
[184, 79.6],
[192.7, 93.8],
[171.5, 70],
[173, 72.4],
[176, 85.9],
[176, 78.8],
[180.5, 77.8],
[172.7, 66.2],
[176, 86.4],
],
},
],
},
};
},
</script>
>> 饼图/环形图/嵌套环形图：PieChart.vue（环形图都是饼图演变来的）
<template>
<div :id="id" :style="chartStyle"></div>
</template>
<script>
import Chart from './mixins/Chart';
export default {
mixins: [Chart],
props: {
// 提示框
tooltipData: {
type: Object,
default() {
return {
formatter: '{b}: {c} ({d}%)',
};
},
},
// 是否是环形
isRing: {
type: Boolean,
default: false,
},
// 是否显示延长线标签
hasPieLabel: {
type: Boolean,
default: true,
},
},
data() {
return {
};
},
methods: {
init() {
this.chartsDom = this.$echarts.init(document.getElementById(this.id));
// 每次数据更新都清空一次实例，以便页面重新渲染，否则更新数据没有变化，页面看起来像没动
document.getElementById(this.id).removeAttribute('_echarts_instance_');
this.option = {
title: {
subtextStyle: {
color: '#2D3E53',
fontSize: 24,
lineHeight: 32,
fontWeight: 500,
},
textStyle: {
color: '#7B93A7',
fontSize: 12,
lineHeight: 16,
},
left: 'center',
top: 60,
itemGap: 2,
...this.titleData,
},
grid: {
...this.gridData,
},
tooltip: {
...this.tooltipConfig,
...this.tooltipData,
},
legend: this.legendData.map((v) => ({
top: 0,
right: 0,
icon: 'rect',
itemWidth: 8,
itemHeight: 8,
itemGap: 12,
textStyle: {
fontSize: 12,
color: '#455A74',
},
...v,
})),
color: this.colors,
series: [],
};
// 处理 series
this.seriesData.forEach((item) => {
const { data = [] } = item;
const dataTemp = data.map((v) => ({ ...v, value: v.value || '' }));
const serie = {
type: 'pie',
minAngle: 5,
radius: this.isRing ? ['50', '70'] : ['0', '70'],
center: ['50%', '92'],
label: {
show: this.hasPieLabel,
formatter: '{b} {c} ({d}%)',
fontSize: 12,
color: '#455A74',
},
itemStyle: {
borderColor: '#FFFFFF',
borderWidth: 1,
},
...item,
data: dataTemp,
};
this.option.series.push(serie);
});
this.chartsDom.setOption(this.option);
},
},
};
</script>
【使用示例】
- 饼图
<template>
<PieChart id="myPie" v-bind="myPie" />
</template>
<script>
import PieChart from '@/components/Charts/PieChart';
export default {
components: { PieChart },
data() {
return {
myPie: {
chartStyle: {
height: '220px',
},
colors: ['#169BFA', '#FBAD3B', '#31CF9A'],
legendData: [{ data: ['pie1', 'pie2', 'pie3'] }],
seriesData: [{
data: [
{ name: 'pie1', value: 5 },
{ name: 'pie2', value: 10 },
{ name: 'pie3', value: 15 },
],
}],
},
};
},
</script>
- 环形图
<template>
<PieChart id="myPie" v-bind="myPie" />
</template>
<script>
import PieChart from '@/components/Charts/PieChart';
export default {
components: { PieChart },
data() {
return {
myPie: {
isRing: true,
chartStyle: {
height: '220px',
},
titleData: {
subtext: '100',
text: '标题',
},
colors: ['#169BFA', '#FBAD3B', '#31CF9A'],
legendData: [{ data: ['pie1', 'pie2', 'pie3'] }],
seriesData: [{
data: [
{ name: 'pie1', value: 5 },
{ name: 'pie2', value: 10 },
{ name: 'pie3', value: 15 },
],
}],
hasPieLabel: false,
},
};
},
</script>
- 嵌套环形图
<template>
<PieChart id="myPie" v-bind="myPie" />
</template>
<script>
import PieChart from '@/components/Charts/PieChart';
export default {
components: { PieChart },
data() {
return {
myPie: {
isRing: true,
chartStyle: {
height: '220px',
},
colors: ['#169BFA', '#FBAD3B', '#31CF9A'],
legendData: [{ data: ['pie1', 'pie2', 'pie3'] }],
seriesData: [
{ name: 'pie1', radius: [45, 50], center: ['50%', 60],
data: [
{ name: 'pie1', value: 60 },
{ value: 100 - 60, itemStyle: { color: '#F6F6F6' }, emphasis: { disabled: true } }
],
},
{ name: 'pie2', radius: [35, 40], center: ['50%', 60],
data: [
{ name: 'pie1', value: 40 },
{ value: 100 - 40, itemStyle: { color: '#F6F6F6' }, emphasis: { disabled: true } }
],
},
{ name: 'pie3', radius: [25, 30], center: ['50%', 60],
data: [
{ name: 'pie1', value: 80 },
{ value: 100 - 80, itemStyle: { color: '#F6F6F6' }, emphasis: { disabled: true } }
],
},
],
hasPieLabel: false,
},
};
},
</script>
>> 自定义仪表盘：GaugeChart.vue（如果是v4.版本的 Echarts，这种样式用原始的 gauge做不出来，需要加极坐标之类的做改造，见下）
<template>
<div :id="id" :style="chartStyle"></div>
</template>
<script>
import Chart from './mixins/Chart';
export default {
mixins: [Chart],
props: {
// 进度条
progressData: {
type: Object,
dedault: () => {},
},
},
data() {
return {
};
},
methods: {
init() {
this.chartsDom = this.$echarts.init(document.getElementById(this.id));
// 每次数据更新都清空一次实例，以便页面重新渲染，否则更新数据没有变化，页面看起来像没动
document.getElementById(this.id).removeAttribute('_echarts_instance_');
this.option = {
series: [
{
type: 'gauge',
center: ['50%', '60%'],
progress: {
show: true,
width: 10,
roundCap: true,
itemStyle: {
// color: 'red' // 进度条颜色
},
...this.progressData,
},
axisLine: {
roundCap: true,
lineStyle: {
width: 10,
color: [[1, '#EBEBEB']],
},
},
splitNumber: 4, // 分割段数
splitLine: { // 分割线样式
distance: -24,
length: 5,
lineStyle: {
width: 2,
color: '#A0A0A0',
},
},
axisTick: { // 刻度样式
distance: -21,
length: 3,
lineStyle: {
width: 1,
color: '#A0A0A0',
},
},
axisLabel: { // 刻度文字样式
distance: -10,
color: '#455A74',
fontSize: 10,
},
anchor: { // 指针固定点
show: false,
},
pointer: { // 指针
show: false,
},
title: { // 文字样式
fontSize: 18,
offsetCenter: [0, '80%'],
// color: 'red'
...this.titleData,
},
detail: { // 数值样式
valueAnimation: true,
fontSize: 24,
offsetCenter: [0, 0],
formatter: (value) => `${value}%`,
},
data: this.seriesData.map((item) => (
{
...item,
}
)),
},
],
};
this.chartsDom.setOption(this.option);
},
},
};
</script>
【使用示例】
<template>
<GaugeChart id="myGauge" v-bind="myGauge" />
</template>
<script>
import GaugeChart from '@/components/Charts/GaugeChart';
export default {
components: { GaugeChart },
data() {
return {
myGauge: {
chartStyle: {
width: '180px',
height: '180px',
},
progressData: {
itemStyle: {
color: '#59D38C',
}
},
seriesData: [{
name: '优',
value: 80,
}],
},
};
},
</script>
v4.版本实现
<template>
<div :id="id" :style="chartStyle"></div>
</template>
<script>
import Chart from './mixins/Chart'
export default {
mixins: [Chart],
props: {
// 区间颜色
grade: {
type: Object,
default () {
return {}
}
}
},
methods: {
init () {
this.chartsDom = this.$echarts.init(document.getElementById(this.id))
// 每次数据更新都清空一次实例，以便页面重新渲染，否则更新数据没有变化，页面看起来像没动
document.getElementById(this.id).removeAttribute('_echarts_instance_')
const seriesValue = (this.seriesData && this.seriesData.length) ? this.seriesData[0]?.data : 0
const option = {
tooltip: {
...this.tooltipConfig,
...this.tooltipData
},
angleAxis: {
show: false,
max: (100 * 360) / 270, // -45度到225度，二者偏移值是270度除360度
type: 'value',
startAngle: 225 // 极坐标初始角度
},
barMaxWidth: 8, // 圆环宽度
radiusAxis: {
show: false,
type: 'category'
},
// 极坐标系 圆环位置和大小
polar: {
center: ['50%', 105],
radius: 130
},
series: [
// 下层圆环，显示最大值 // 写在上层配置前，如果写在后面，需要设置 z属性（相当于z-index）来区分层级
{
type: 'bar',
name: '当日负荷均值',
data: [
{
value: 100, // 最大值
itemStyle: {
color: '#eee'
}
}
],
barGap: '-100%', // 柱间距离,上下两层圆环重合
coordinateSystem: 'polar', // 对应极坐标系
roundCap: true // 两端圆角
},
// 上层圆环，显示数据
{
type: 'bar',
data: [
{
value: seriesValue,
itemStyle: {
color: this.grade.color
}
}
],
barGap: '-100%',
coordinateSystem: 'polar',
roundCap: true
},
// 仪表盘
{
type: 'gauge',
center: ['50%', 105],
radius: 80,
detail: { // 补充文字
formatter: this.grade.text,
offsetCenter: [0, 18],
fontSize: 18,
color: this.grade.color
},
data: [
{
name: `${seriesValue}%` // 对应 title的设置
}
],
title: { // 居中文字
color: '#455A74',
fontSize: 28,
offsetCenter: [0, -12]
},
min: 0,
max: 100,
splitNumber: 4, // 分割段数
pointer: {
show: false
},
splitLine: { // 分割线样式
length: 5,
lineStyle: {
width: 1,
color: '#ccc'
}
},
axisTick: { // 刻度样式
length: 2,
lineStyle: {
color: '#ccc'
}
},
axisLine: { // 刻度盘样式
show: false
},
axisLabel: { // 刻度标签
distance: -25, // 设置为负数，在刻度线外侧
fontSize: 12,
color: '#455A74',
formatter: (value) => {
// 显示 优良中差
switch (String(value)) {
case '0':
return '0'
case '25':
return '25'
case '50':
return '50'
case '75':
return '75'
case '100':
return '100'
default:
return ''
}
}
}
}
]
}
this.chartsDom.setOption(option)
}
}
}
</script>
【使用示例】
<template>
<GaugeChart id="myGauge" v-bind="myGauge" />
</template>
<script>
import GaugeChart from '@/components/Charts/GaugeChart';
export default {
components: { GaugeChart },
data() {
return {
myGauge: {
chartStyle: {
height: '180px',
},
seriesData: [{
name: 'xxx',
value: 80,
}],
grade: {
color: '#31CF9A',
text: '优',
}
},
};
},
</script>
>> 雷达图
<template>
<div :id="id" :style="chartStyle"></div>
</template>
<script>
import Chart from './mixins/Chart';
export default {
mixins: [Chart],
props: {},
data() {
return {
};
},
methods: {
init() {
// 初始化
this.chartsDom = this.$echarts.init(document.getElementById(this.id));
// 每次数据更新都清空一次实例，以便页面重新渲染，否则更新数据没有变化，页面看起来像没动
document.getElementById(this.id).removeAttribute('_echarts_instance_');
// 处理 indicator
let indicator = [];
if (this.seriesData && this.seriesData.length > 0) {
// 防止数据缺失
const validData = this.seriesData.find(
(item) => (item.data && item.data.length > 0),
);
indicator = validData ? validData.data.map(
(item) => ({ name: item.name, min: 0, max: 1 }),
) : [{}, {}, {}, {}, {}, {}];
} else {
for (let i = 0; i < 6; i += 1) {
indicator.push(
{ name: '', min: 0, max: 1 },
);
}
}
this.option = {
tooltip: {
trigger: 'item',
...this.tooltipConfig,
...this.tooltipData,
},
legend: this.legendData.map((v) => ({
bottom: 0,
right: 20,
icon: 'rect',
itemStyle: {
borderColor: '#FFFFFF',
borderWidth: 12,
},
inactiveBorderColor: '#FFFFFF',
...v,
})),
radar: {
indicator,
center: ['50%', '115'],
radius: 85,
splitNumber: 10,
splitArea: {
areaStyle: {
color: [
'rgba(255, 95, 95, 0.15)',
'rgba(255, 95, 95, 0.15)',
'rgba(255, 95, 95, 0.15)',
'rgba(255, 95, 95, 0.15)',
'rgba(255, 95, 95, 0.15)',
'rgba(255, 95, 95, 0.15)',
'rgba(255, 209, 25, 0.15)',
'rgba(255, 209, 25, 0.15)',
'rgba(255, 172, 76, 0.15)',
'rgba(49, 207, 154, 0.15)',
],
},
},
splitLine: {
lineStyle: {
color: [
'rgba(0, 0, 0, 0)',
'rgba(0, 0, 0, 0)',
'rgba(0, 0, 0, 0)',
'rgba(0, 0, 0, 0)',
'rgba(0, 0, 0, 0)',
'rgba(0, 0, 0, 0)',
'rgba(45, 62, 83, 0.15)',
'rgba(0, 0, 0, 0)',
'rgba(45, 62, 83, 0.15)',
'rgba(45, 62, 83, 0.15)',
'rgba(45, 62, 83, 0.15)',
],
},
},
axisLine: {
lineStyle: {
color: 'rgba(45, 62, 83, 0.15)',
},
},
name: {
fontSize: 12,
color: '#455A74',
/* width: 50,
overflow: 'breakAll', */
formatter: (params) => {
let text = params;
if (text !== indicator[0].name && text !== indicator[3].name && text.length > 8) {
const splitIndex = Math.ceil(text.length / 2);
text = `${params.substr(0, splitIndex)}\n${params.substr(splitIndex)}`;
}
return text;
},
},
},
series: [],
};
// 处理 series
this.seriesData.forEach((item) => {
this.option.series = [
...this.option.series,
...this.handleSeries(item),
];
// if (item.data && item.data.length > 0) {
// }
});
this.chartsDom.setOption(this.option);
},
handleSeries(serie) {
const { name, color, data } = serie;
const dataList = data.map((item, index) => {
const arr = new Array(data.length);
arr.splice(index, 1, item);
return arr;
});
return [data, ...dataList].map((item, index) => {
return {
type: 'radar',
name,
symbol: index === 0 ? 'circle' : 'none',
symbolSize: 6,
itemStyle: {
color,
borderColor: '#FFFFFF',
borderWidth: 0.5,
},
lineStyle: {
color: index === 0 ? color : 'transparent',
},
z: index === 0 ? 1 : 2,
data: [item],
};
});
},
},
};
</script>
【使用示例】
<template>
<RadarChart id="myRadar" v-bind="myRadar" />
</template>
<script>
import RadarChart from '@/components/Charts/RadarChart';
export default {
components: { RadarChart },
data() {
return {
myRadar: {
chartStyle: {
height: '220px',
},
colors: ['#31CF9A', '#FFAC4C'],
legendData: [{ data: ['radar1', 'radar2'] }],
seriesData: [
{ name: 'radar1', color: '#31CF9A', data: [0.8， 0.9， 1， 0.9， 0.9] },
{ name: 'radar2', color: '#FFAC4C', data: [0.4, 0.5, 0.6, 0.5, 0.6] },
],
},
};
},
</script>
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