自动轮播方法

参数myChart代表echarts的实例名称, options指定图表的配置项和数据, num类目数量(原因：循环时达到最大值后，使其从头开始循环), time轮播间隔时长

//自动轮播显示高亮--tooltip提示
export function autoHover(myChart, option, num, time) {var defaultData = { //设置默认值time: 2000,num: 0};if (!time) {time = defaultData.time;}if (!num) {num = defaultData.num;}var count = 0;var timeTicket = null;function zdy(){timeTicket = setInterval(function () {timeTicket && clearInterval(timeTicket);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}zdy();}, 3000);};zdy();myChart.on("mouseover", function (params) {if (params.componentType !== 'geo' ){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 >= num) {count = 0}}, 3000);});
}

使用方式–在需要的界面引入以上方法

import {autoHover} from "../../utils/index";