highchart exports excel chart data. You only need to import export-csv.js files to export the data.
Why doesn"t echart support this? Checked the practice on the Internet, all by writing backstage.
what is a good way for echart to export chart data, like this:
ask the gods for help
toolbox data View component 
toolbox:{show:true,feature:{dataView:{show:true}}},copy to excel
the export of pure front end is not clear. You can export in the background. The front end page uses InnerHtml version of jquery 1.9 or above to obtain all the elements of the table, and the background export excel
you can manually implement an export xls,. If you can get the data rendering echarts, you can export
https://github.com/SheetJS/js.
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