目录 echarts自动轮播tooltip Echarts大屏饼图(可自动轮播) echarts自动轮播tooltip vue首先需要封装tools.js的包(函数): export function autoHover(myChart, option, num, time) { var defaultData = {
目录
- echarts自动轮播tooltip
- Echarts大屏饼图(可自动轮播)
echarts自动轮播tooltip
vue首先需要封装tools.js的包(函数):
export function autoHover(myChart, option, num, time) { var defaultData = { // 设置默认值 time: 2000, num: 100 } if (!time) { time = defaultData.time } if (!num) { num = defaultData.num } var count = 0 var timeTicket = null timeTicket && clearInterval(timeTicket) timeTicket = setInterval(function () { myChart.dispatchAction({ type: 'downplay', seriesIndex: 0 // serieIndex的索引值 可以触发多个 }) myChart.dispatchAction({ type: 'highlight', seriesIndex: 0, dataIndex: count }) myChart.dispatchAction({ type: 'showTip', seriesIndex: 0, dataIndex: count }) count++ if (count >= num) { count = 0 } }, time) myChart.on('mouseover', function (params) { clearInterval(timeTicket) myChart.dispatchAction({ type: 'downplay', seriesIndex: 0 }) myChart.dispatchAction({ type: 'highlight', seriesIndex: 0, dataIndex: params.dataIndex }) myChart.dispatchAction({ type: 'showTip', seriesIndex: 0, dataIndex: params.dataIndex }) }) myChart.on('mouseout', function () { timeTicket && clearInterval(timeTicket) timeTicket = setInterval(function () { myChart.dispatchAction({ type: 'downplay', seriesIndex: 0 // serieIndex的索引值 可以触发多个 }) myChart.dispatchAction({ type: 'highlight', seriesIndex: 0, dataIndex: count }) myChart.dispatchAction({ type: 'showTip', seriesIndex: 0, dataIndex: count }) count++ if (count >= 17) { count = 0 } }, 3000) }) } export default { autoHover }
最好把这个js文件放到utils文件夹下,其他组件可能也需要用到,作为一个公共的函数;
在vue组件中引入使用:
import { autoHover } from '@/utils/tool.js' // 引入封装的函数 export default { mounted() { this.initLine() }, methods: { // 折线图 initLine() { var myChart = echarts.init(document.getElementById('manyLine')); let option = { // ......此配置省略 } myChart.setOption(option, true); // 自动轮播 autoHover(myChart, this.option, 4, 3000); // 参数分别为:容器,配置,轮播数量,轮播间隔时间 } } }
Echarts大屏饼图(可自动轮播)
API:
highlight
启动高亮downplay
关闭高亮
设置定时器:逐个开启饼块的高亮(注意:在开启下一个前将上一个高亮关闭)
import * as echarts from 'echarts'; var chartDom = document.getElementById('main'); var myChart = echarts.init(chartDom); var option; option = { title: { text: 'Referer of a Website', subtext: 'Fake Data', left: 'center' }, tooltip: { trigger: 'item' }, legend: { orient: 'vertical', left: 'left' }, series: [ { name: 'Access From', type: 'pie', radius: '50%', data: [ { value: 1048, name: 'Search Engine' }, { value: 735, name: 'Direct' }, { value: 580, name: 'Email' }, { value: 484, name: 'Union Ads' }, { value: 300, name: 'Video Ads' } ], emphasis: { itemStyle: { shadowBlur: 10, shadowOffsetX: 0, shadowColor: 'rgba(0, 0, 0, 0.5)' } } } ] }; let count = 0; setInterval(() => { myChart.dispatchAction({ type: 'downplay', seriesIndex: 0, dataIndex: count }); count++; if (count === 5) { count = 0; } myChart.dispatchAction({ type: 'highlight', seriesIndex: 0, dataIndex: count }); }, 5000); option && myChart.setOption(option);
提示:若在vue组件中复用组件引入option配置时,注意将与相关的echarts实例传给父组件,使用对应的实例myChart进行操作,如下案例:
chart.vue 可复用组件: 挂载完成后将Echarts实例chart传给父组件
<script> import * as echarts from 'echarts' import 'zrender/lib/svg/svg' import { debounce } from 'throttle-debounce' export default { name: '', props: ['option', 'renderer', 'notMerge', 'lazyUpdate'], data () { return { width: '100%', height: '100%', } }, watch: { option (val) { this.setOption(val) }, }, created () { this.chart = null }, async mounted () { // 初始化图表 await this.initChart(this.$el) // 向父组件传递chart实例 this.$emit('send', this.chart) // 将传入的配置(包含数据)注入 this.setOption(this.option) // 监听屏幕缩放,重新绘制 echart 图表 window.addEventListener('resize', debounce(100, this.resize)) }, updated () { // 每次更新组件都重置 this.setOption(this.option) }, beforeDestroy () { // 组件卸载前卸载图表 this.dispose() }, methods: { initChart (el) { // renderer 用于配置渲染方式 可以是 svg 或者 canvas const renderer = this.renderer || 'canvas' return new Promise(resolve => { setTimeout(() => { this.chart = echarts.init(el, null, { renderer, width: 'auto', height: 'auto', }) resolve() }, 0) }) }, setOption (option) { if (!this.chart) { return } const notMerge = this.notMerge const lazyUpdate = this.lazyUpdate this.chart.setOption(option, notMerge, lazyUpdate) }, dispose () { if (!this.chart) { return } this.chart.dispose() this.chart = null }, resize () { this.chart && this.chart.resize() }, getInstance () { return this.chart }, }, render () { const { width, height } = this return ( <div class='default-chart' style={{ width, height }} /> ) }, } </script>
饼状图组件:on-send监听子组件触发的send方法,并执行相应的方法
<script> import SubTitle from './SubTitle' import Chart from '../Chart' export default { name: '', data () { return { myChart: null, option: 省略...(与上文option设置相同 可复制于此) } }, mounted () { this.$nextTick(() => { this.pieActive() }) }, methods: { // 饼状图轮播 pieActive () { let count = 0 let length = this.option.series[0].data.length setInterval(() => { this.myChart.dispatchAction({ type: 'downplay', seriesIndex: 0, dataIndex: count, }) count++ if (count === length) { count = 0 } this.myChart.dispatchAction({ type: 'highlight', seriesIndex: 0, dataIndex: count, }) }, 5000) }, getChart (chart) { this.myChart = chart }, }, render () { return ( <div style="height:250px;width:480px;position:absolute;left:1402px;top:772px;display:flex;flex-direction: column;"> <SubTitle title="省份销售占比图"/> <div style="flex: 1; position: relative;"> <Chart option={this.option} on-send={this.getChart} style="position: absolute;top: 10px;"/> </div> </div> ) }, } </script> <style lang="scss" scoped></style>
以上为个人经验,希望能给大家一个参考,也希望大家多多支持自由互联。