如何添加链接到谷歌饼图切片

Question

This is the code I've been working, I need to redirect to another page by clicking the slices.

<script type='text/javascript' src='https://www.google.com/jsapi'></script>
<script type='text/javascript'>

  // Load the Visualization API and the piechart package.
  google.load('visualization', '1.0', {'packages':['corechart']});

  // Set a callback to run when the Google Visualization API is loaded.
  google.setOnLoadCallback(drawChart);

  // Callback that creates and populates a data table,
  // instantiates the pie chart, passes in the data and
  // draws it.
  function drawChart() {

    // Create the data table.
    var data = new google.visualization.DataTable();
    data.addColumn('string', 'Topping');    
    data.addColumn('number', 'Slices');
    data.addRows([
      ['Cleaning Completed', $co1],
  ['Denied At Client Place', $co2],
  ['Denied', $co3],
  ['Postponed', $co4],
  ['Careless Driver', $co5],
  ['Cleaning Started', $co6],
  ['Emptyspace', $co22],
  ['Assigned to Vehicle', $co23],
  ['Select', $co24],
  ['Call Not Picked', $co25],
  ['Asked to Call Back', $co26],
    ]);


       // Instantiate and draw our chart, passing in some options.
            var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
       chart.draw(data, options);
   }
       </script>

Answer 1

I believe Google visualization allows you to set a click handler. So in your drawChart function, add this. (AFTER chart.draw)

google.visualization.events.addListener(chart, 'select', function() {
    var selection = chart.getSelection();
    console.log(selection);  
});

See what "selection" has in it and see if that has enough information to set where the browser should redirect to.

More info: https://developers.google.com/chart/interactive/docs/reference#addlistener