Tooltip customization not working for Google Charts - Javascript Google Chart

Javascript examples for Google Chart:Tooltip

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Description

Tooltip customization not working for Google Charts

Demo Code

ResultView the demo in separate window 

<html>
   <head> 
      <meta name="viewport" content="width=device-width, initial-scale=1"> 
   </head> 
   <body> 
      <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script> 
      <div id="chart_div"></div> 
      <script type="text/javascript">
      google.charts.load('current', {'packages':['timeline']});
    google.charts.setOnLoadCallback(drawChart);
    function drawChart() {/*  w  w w  .  j a va  2s  .c  o m*/
      var data = new google.visualization.DataTable();
      data.addColumn('string', 'Team');
      data.addColumn('string', 'Time');
      data.addColumn({type: 'string', role: 'tooltip'});
      data.addColumn('date', 'Season Start Date');
      data.addColumn('date', 'Season End Date');
      data.addRows([
        ['Baltimore Ravens',  '', 'my tooltip',   new Date(2000, 8, 5), new Date(2001, 1, 5)],
        ['New England Patriots', '', 'my tooltip', new Date(2001, 8, 5), new Date(2002, 1, 5)],
      ]);
      var options = {
        height: 450,
        timeline: {
          groupByRowLabel: true
        }
      };
      var chart = new google.visualization.Timeline(document.getElementById('chart_div'));
      chart.draw(data, options);
    }

      </script>  
   </body>
</html>

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