tools.js
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/**
* echarts tooltip 自动轮播
* @author liuwei
* @param myChart //初始化echarts的实例
* @param option //指定图表的配置项和数据
* @param num //类目数量(原因：循环时达到最大值后，使其从头开始循环)
* @param time //轮播间隔时长
*/
export function autoHover(myChart, option, num, time) {
const defaultData = { // 设置默认值
time: 2000,
num: 0,
};
if (!time) {
time = defaultData.time;
}
if (!num) {
num = defaultData.num;
}
let count = 0;
let timeTicket = null;
timeTicket && clearInterval(timeTicket);
timeTicket = setInterval(() => {
myChart.dispatchAction({
type: 'downplay',
seriesIndex: 0, // serieIndex的索引值 可以触发多个
dataIndex: count,
});
count %= num;// 增加
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', (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', () => {
timeTicket && clearInterval(timeTicket);
timeTicket = setInterval(() => {
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);
});
return timeTicket;
}
export default {
autoHover,
};