[GitHub] [incubator-echarts] Vignesvar-ap commented on issue #13492: how to display additional information in the sankey chart tooltips

[GitBox <gi...@apache.org>]

Vignesvar-ap commented on issue #13492:
URL: https://github.com/apache/incubator-echarts/issues/13492#issuecomment-718597219


   Hi, 
   Thanks for your response, I have tried the callback function parameter but the tooltip is not visible in the front-end chart now. It has display earlier. Please find the sample code I have used in the JS file. 
   
   formatter: function(param, ticket, callback){
   			// console.log("param"+JSON.parse(param.dta.source[0]));
   			//	return `${param.source} -> ${param.target} : ${value}`;
   				for(var i=0; i<param.length; i++){
   				console.log("param -> "+param[i].value);
   					return param[i].value;
   				}
   				
   			}
   Please let me know where I did a mistake here. 


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