I have created a stacked bar chart using Kendo UI. I want to show tooltip for each tile in stacked bar chart and use another array for this purpose which contains the values to be shown as tooltip.

For ex: When I hover over, USA for year 2000, tooltip should show, NYC: 60% & SFO: 40% (as shown in image).

Here is a fiddle.

This is what I am trying to achieve (in this case showing tooltip for year 2000 for USA):

Problem is when I use series click or series hover events, I am not able to identify tile (inside the stacked bar chart) which is making it harder to show tooltip.

This is the code:

• html { font-size: 14px; font-family: Arial, Helvetica, sans-serif; }

     <script src="https://kendo.cdn.telerik.com/2019.1.115/js/jquery.min.js"></script>
     <script src="https://kendo.cdn.telerik.com/2019.1.115/js/kendo.all.min.js"></script>
  

       var CityData = [{country: "USA", children:[{"NYC": ["60%", "70%", "80%"]}, {"SFO": ["40%", "30%", "20%"]}]},
  
                       {country: "Mexico", children:[{"Mexico City": ["80%", "80%", "80%"]}, {"Cancun": ["20%", "20%", "20%"]}]},
  
  
                          {country: "Canada", children:[{"Toronto": ["50%", "60%", "60%"]}, {"Vancouver": ["50%",
  

  "40%", "40%"]}]}

                           ];
  
         function createChart() {
  
  
             $("#chart").kendoChart({
                 title: {
                     text: "City data"
                 },
                 legend: {
                     visible: false
                 },
                 seriesDefaults: {
                     type: "column",
                     stack: {
                         type: "100%"
                     }
                 },
                 series: [{
                     name: "USA",
                     stack: {
                         group: "Country"
                     },
                     data: [854622, 925844, 984930]
                 }, {
                     name: "Canada",
                     stack: {
                         group: "Country"
                     },
                     data: [490550, 555695, 627763]
                 }, {
                     name: "Mexico",
                     stack: {
                         group: "Country"
                     },
                     data: [379788, 411217, 447201]
                 }
  
                  ],
                 seriesColors: ["yellow", "green", "red"],
                 valueAxis: {
                     line: {
                         visible: false
                     }
                 },
                 categoryAxis: {
                     categories: [2000, 2005, 2010],
                     majorGridLines: {
                         visible: false
                     }
                 },
                 tooltip: {
                     visible: true,
                     template: "#= series.stack.group #, city #= series.name #"
                 }
             });
         }
  
         $(document).ready(createChart);
         $(document).bind("kendo:skinChange", createChart);
     </script>
  

You need to set tooltip: { shared: true } and it will work, I included other customizable properties of tooltip below also.

Working demo: https://dojo.telerik.com/OfeMiHUb/4

Snippet:

 tooltip: {
             shared: true,
             visible: true,
             background: "#000",
             template: "#= series.stack.group #, city #= series.name #"
          }

or you can try this if you want another template of your tooltip: https://dojo.telerik.com/OfeMiHUb/3

UPDATE:

What changed?:

tooltip: { 
     template: `USA- #= cityData[0]
                            .children
                                 .map(itm => Object.keys(itm)[0]) #`
    }

OP clarified further what he wanted, as per new information, please see new working example: https://dojo.telerik.com/OfeMiHUb/9

You can retrieve your city-data through indexing the keys of the children-object like this: cityData[0].children.map(itm => Object.keys(itm)[0])

Possible additions:

• If you want the series.name to be dynamically added to the tooltip, instead of explicitly typing it in. You can use: series.name.

Like this:

tooltip: { 
   template: `#= series.name # - #=
   cityData[0]
       .children
           .map(itm => Object.keys(itm)[0]) #`}

Change the ArrayIndex of cityData[index] to select a nations cities.

i.e.

0: USA
1: Canada 
2: Mexico

UPDATE 2:

After reading through what you wrote (3000x) + looking at the image, I am interpreting that u also want the percentage showing (even tho it seems like in the clarifying comment below that u dont?). Anyhow:

        series: [{
            name: "USA",
            stack: {
                group: "Country"
            },
            tooltip: {template: `#= series.name # - #=
            cityData[0]
                .children
                    .map(itm => '[' + Object.keys(itm)[0] + ']' + ' : ' + Object.values(itm)[0][0]) #`},
            data: [854622, 925844, 984930]
        }, {
            name: "Canada",
            stack: {
                group: "Country"
            },
            tooltip: {template: `#= series.name # - #=
            cityData[1]
                .children
                    .map(itm => '[' + Object.keys(itm)[0] + ']' + ' : ' + Object.values(itm)[0][0]) #`},
            data: [490550, 555695, 627763]
        }, {
            name: "Mexico",
            stack: {
                group: "Country"
            },
                            tooltip: {template: `#= series.name # - #=
            cityData[2]
                .children
                    .map(itm => '[' + Object.keys(itm)[0] + ']' + ' : ' + Object.values(itm)[0][0]) #`},
            data:[379788, 411217, 447201]
        }

         ],

Almost got the percentage / series working.

Right now I'm struggling with extracting the series-index in this selector: Object.values(itm)[0][SERIES_INDEX_SHOULD_BE_HERE]

TO BE CONTINUED...