封装一个公用的【Echarts图表组件】的3种模板
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一、安装echarts
npm install echarts --save二、在需要的页面引入
import * as echarts from "echarts"三、创建组件
1、模板1:vue2+javascript
- <template>
- <div>
- <div class="echart_size" :id="id"></div>
- </div>
- </template>
- <script>
- import * as echarts from 'echarts'
- export default {
- props: {
- // 接收的参数
- id: {
- type: String,
- default: ''
- },
- datas: {
- type: Array,
- default: () => []
- }
- },
- data() {
- return {
- // 变量
- }
- },
- created() {
- this.$nextTick(() => {
- this.barBtn()
- })
- },
- methods: {
- barBtn() {
- // 实例化对象
- let myCharts = echarts.init(document.getElementById(this.id))
- // 指定配置项和数据
- let option = {
- // 某图表
- }
- // 把配置项给实例对象
- myCharts.setOption(option)
- // 让图表跟随屏幕自动的去适应
- window.addEventListener('resize', function () {
- myCharts.resize()
- })
- }
- }
- }
- </script>
- <style lang="scss" scoped>
- .echart_size{
- width: 500px;
- height: 500px;
- }
- </style>
2、模板2:vue3+javascript
vue3中,有的图表调用不到,初始化echarts时使用 shallowRef
const myCharts = shallowRef()- <template>
- <div class="echart_size" :id="props.id"></div>
- </template>
- <script setup>
- import { reactive, ref, nextTick, onMounted } from 'vue'
- import * as echarts from 'echarts'
- const props = defineProps({
- id: {
- type: String,
- required: true
- },
- datas:{
- type: Array,
- required: true
- }
- })
- let person=reactive({
- // 初始变量
- })
- onMounted(()=>{
- GetEchar()
- })
- const GetEchar = () => {
- const myCharts = ref()
- nextTick(() => {
- myCharts.value = echarts.init(document.getElementById(props.id))
- let option = {
- // 某图表
- };
- myCharts.value.setOption(option)
- // 让图表跟随屏幕自动的去适应
- window.addEventListener('resize', function () {
- myCharts.value.resize()
- })
- })
- }
- </script>
- <style lang="scss" scoped>
- .echart_size {
- width: 100%;
- height: 100%;
- }
- </style>
3、模板3:vue3+typescript
- <template>
- <div class="echart_size" :id="props.id"></div>
- </template>
- <script lang="ts" setup>
- import { reactive, ref, nextTick, onMounted } from 'vue'
- import * as echarts from 'echarts'
- let person: any = reactive({
- // 初始变量
- })
- type Props = {
- id: string
- }
- const props = withDefaults(defineProps<Props>(), {})
- onMounted(()=>{
- GetEchar()
- })
- const GetEchar = () => {
- const myChart = ref<HTMLElement>()
- const myCharts = ref<any>()
- nextTick(() => {
- const chartDom = document.getElementById(props.id)!
- myCharts.value = echarts.init(chartDom)
- let option = {
- };
- myCharts.value.setOption(option)
- // 让图表跟随屏幕自动的去适应
- window.addEventListener('resize', function () {
- myCharts.value.resize()
- })
- })
- }
- </script>
- <style lang="scss" scoped>
- .echart_size {
- width: 500px;
- height: 500px;
- }
- </style>
四、页面调用
1、vue2
- <template>
- <div>
- <EchartModule v-if="data&&data.length>0" :id="'myEchart'" :datas="data" />
- </div>
- </template>
- <script>
- import EchartModule from '@/components/echartModule'
- export default {
- components: {EchartModule},
- data(){
- return{
- data: [
- { value: 0, label: '测试1' },
- { value: 1, label: '测试2' }
- ]
- }
- }
- }
- </script>
2、vue3+js
- <template>
- <EchartModule v-if="data&&data.length>0" :id="'myEchart'" :datas="data" />
- </template>
- <script setup>
- import { reactive } from 'vue'
- import EchartModule from '@/components/echartModule'
- let person=reactive({
- data:[
- { value: 0, label: '测试1' },
- { value: 1, label: '测试2' }
- ]
- })
- </script>
3、vue3+ts
- // vue3+ts
- <template>
- <EchartModule v-if="data&&data.length>0" :id="'myEchart'" :datas="data" />
- </template>
- <script lang="ts" setup>
- import { reactive } from 'vue'
- import EchartModule from '@/components/echartModule'
- let person:any=reactive({
- data:[
- { value: 0, label: '测试1' },
- { value: 1, label: '测试2' }
- ]
- })
- </script>
五、Echarts 常用的相关事件
1、鼠标单击/左键事件
- //vue2
- myCharts.on('click', function(e) {})
- // vue3
- myCharts.value.on('click', function(e) {})
2、鼠标移入/进入事件
- //vue2
- myCharts.on('mouseover', function(e) {})
- // vue3
- myCharts.value.on('mouseover', function(e) {})
3、鼠标移出/离开事件
- //vue2
- myCharts.on('mouseout', function(e) {})
- // vue3
- myCharts.value.on('mouseout', function(e) {})
4、让图表跟随屏幕去自适应
- window.addEventListener('resize', function () {
- // vue2
- myCharts.resize()
- // vue3
- myCharts.value.resize()
- })
5、轮播动画效果
需要配置tooltip参数使用,显示tooltip提示框的轮播动画
- // vue2
- myChart.currentIndex = -1;
- setInterval(function () {
- var dataLen = option.series[0].data.length;
- // 取消之前高亮的图形
- myChart.dispatchAction({
- type: 'downplay',
- seriesIndex: 0,
- dataIndex: myChart.currentIndex
- });
- myChart.currentIndex = (myChart.currentIndex + 1) % dataLen;
- // 高亮当前图形
- myChart.dispatchAction({
- type: 'highlight',
- seriesIndex: 0,
- dataIndex: myChart.currentIndex
- });
- // 显示 tooltip
- myChart.dispatchAction({
- type: 'showTip',
- seriesIndex: 0,
- dataIndex: myChart.currentIndex
- });
- }, 2000);
6、dispatchAction 行为事件
具体用法参考 echarts 下的 action:https://echarts.apache.org/zh/api.html#action
(1)highlight:高亮指定的数据图形
- myCharts.currentIndex = -1
- myCharts.dispatchAction({
- type: 'highlight',
- seriesIndex: 0,
- dataIndex: myCharts.currentIndex
- });
(2)downplay:取消高亮指定的数据图形
(3)select:选中指定的数据
(4)unselect:取消选中指定的数据
(5)toggleSelect:切换选中状态
(6)tooltip - showTip:显示提示框
(7)tooltip - hideTip:隐藏提示框
(8)dataZoom - dataZoom:数据区域缩放
(9)geo - geoSelect:选中指定的地图区域
(10)geo - geoUnSelect:取消选中指定的地图区域
(11)geo - geoToggleSelect:切换指定的地图区域选中状态
六、Echarts 常用的相关配置
1、tooltip 提示框
(1)tooltip的公共属性配置
- tooltip: {
- position:'right',
- padding: [5,8],
- textStyle:{
- color: '#eee',
- fontSize: 13
- },
- backgroundColor: "rgba(13,5,30,.5)",
- extraCssText:'z-index:1', // 层级
- axisPointer: {}
- }
(2)trigger 类型为 item
- tooltip: {
- trigger: 'item',
- formatter: function(param) {
- let resultTooltip =
- "" +
- "" + param.name + "" +
- "" +
- "" +
- " " + param.seriesName + ":" +
- "" + param.value + "" +
- "";
- return resultTooltip
- }
- }
(3)trigger 类型为 axis
- tooltip: {
- trigger: 'axis',
- formatter: function(param) {
- let resultTooltip =
- "" +
- "" + param[0].name + "" +
- "" +
- "" +
- " " + param[0].seriesName + ":" +
- "" + param[0].value + "" +
- "";
- return resultTooltip
- }
- }
2、axisPointer 坐标指示器
(1)type 类型为 shadow
- axisPointer: {
- type: 'shadow',
- label: { show: true, backgroundColor: 'transparent' },
- shadowStyle: {
- color: {
- type: 'linear',
- x: 0,
- y: 0,
- x2: 0,
- y2: 1,
- colorStops: [
- { offset: 0, color: 'rgba(100, 101, 171, 0)' },
- { offset: 0.5, color: 'rgba(100, 101, 171, 0.2)' },
- { offset: 0.999999, color: 'rgba(100, 101, 171, 1)' },
- { offset: 1, color: 'rgba(100, 101, 171, 1)' },
- ],
- global: false
- }
- }
- }
(2)type 类型为 line
- axisPointer: {
- type: 'line',
- label: { show: true, backgroundColor: 'transparent' },
- lineStyle: {
- color: {
- type: 'linear',
- x: 0,
- y: 0,
- x2: 0,
- y2: 1,
- colorStops: [
- { offset: 0, color: 'rgba(100, 101, 171, 0)' },
- { offset: 0.5, color: 'rgba(100, 101, 171, 0.2)' },
- { offset: 0.999999, color: 'rgba(100, 101, 171, 1)' },
- { offset: 1, color: 'rgba(100, 101, 171, 1)' }
- ],
- global: false
- },
- type: 'solid',
- width: 10
- }
- }
3、渐变处理
(1)线性渐变区域 LinearGradient
- // 前四个分参数分别代表右,下,左,上,数值0-1
- color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
- {
- offset: 0,
- color: 'blue'
- },
- {
- offset: 1,
- color: 'red'
- }
- ])
(2)径向渐变区域 RadialGradient
- // 前三个分参数分别代表圆心(x,y),半径(数值0-1)
- color: new echarts.graphic.RadialGradient(0.5, 0.5, 0.8, [
- {
- offset: 0,
- color: 'blue'
- },
- {
- offset: 1,
- color: 'red'
- }
- ])
(3)线性渐变区域 colorStops-linear
- // x,y,x2,y2数值同LinearGradient前四个参数分别代表右,下,左,上,数值0-1
- color: {
- type: 'linear',
- x: 0,
- y: 0,
- x2: 0,
- y2: 1,
- colorStops: [
- {
- offset: 0,
- color: 'blue'
- },
- {
- offset: 1,
- color: 'red'
- }
- ],
- global: false // 缺省为 false
- }
(4)径向渐变区域 colorStops-radial
- // x 0.5 y 0.5 代表圆心,r 代表半径
- color: {
- type: 'radial',
- x: 0.5,
- y: 0.5,
- r: 0.9,
- colorStops: [
- {
- offset: 0,
- color: 'blue'
- },
- {
- offset: 1,
- color: 'red'
- }
- ],
- global: false // 缺省为 false
- }
(5)纹理填充 color-image
- let url= "../../static/bg_icon.png"
- color: {
- image: url, // 支持为 HTMLImageElement, HTMLCanvasElement,不支持路径字符串
- repeat: 'repeat' // 是否平铺,可以是 'repeat-x', 'repeat-y', 'no-repeat'
- }
4、label中文字通过rich自定义样式设置
- label: {
- show: true,
- formatter: `\n{d|{d}} {unit|${props.unit}}`,
- rich: {
- d: {
- fontSize: 26,
- fontWeight: 600,
- color: "#000"
- },
- unit: {
- fontSize: 20,
- fontWeight: 600,
- color: "#3C3B3B"
- }
- },
- color: "#000"
- }
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