drilldown to url using node click from api

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingSoft Demo</title>

  <script nonce="undefined" src="https://cdn.zingchart.com/zingchart.min.js"></script>
  <style></style>
</head>

<body>
  <div id='myChart'></div>
  <script>
    ZC.LICENSE = ["569d52cefae586f634c54f86dc99e6a9", "b55b025e438fa8a98e32482b5f768ff5"];
    var myConfig = {
      "type": "pie",
      "title": {
        "text": "Browser market shares. January, 2015 to May, 2015"
      },
      "subtitle": {
        "text": "Click the columns to view that browser homepage"
      },
      "plot": {
        "cursor": "hand",
        "value-box": {
          "placement": "out",
          "text": "%v%",
        },
        "tooltip": {
          "text": "%t"
        },
        "detach": false
      },
      "series": [{
          "values": [
            56.33
          ],
          "text": "Internet Explorer"
        },
        {
          "values": [
            24
          ],
          "text": "Chrome"
        },
        {
          "values": [
            10.4
          ],
          "text": "Firefox"
        },
        {
          "values": [
            4.8
          ],
          "text": "Safari"
        },
        {
          "values": [
            1.1
          ],
          "text": "Opera"
        }
      ]
    };

    zingchart.render({
      id: 'myChart',
      data: myConfig,
      height: 400,
      width: '100%'
    });

    /**
     * Handle the click event. Based on the plot clicked
     * re-direct the user!
     */
    zingchart.node_click = function(e) {
      switch (e.plotindex) {
        case 4:
          window.open('https://www.opera.com/', '_blank');
          break;
        case 3:
          window.open('https://www.apple.com/safari/', '_blank');
          break;
        case 2:
          window.open('https://www.mozilla.org', '_blank');
          break;
        case 1:
          window.open('https://www.google.com/chrome/', '_blank');
          break;
        default:
          window.open('https://www.microsoft.com/en-us/download/internet-explorer.aspx', '_blank');
          break;
      }
    }
  </script>
</body>

</html>

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingSoft Demo</title>

  <script src="https://cdn.zingchart.com/zingchart.min.js"></script>
</head>

<body>
  <div id='myChart'></div>
</body>

</html>

var myConfig = {
  "type": "pie",
  "title": {
    "text": "Browser market shares. January, 2015 to May, 2015"
  },
  "subtitle": {
    "text": "Click the columns to view that browser homepage"
  },
  "plot": {
    "cursor": "hand",
    "value-box": {
      "placement": "out",
      "text": "%v%",
    },
    "tooltip": {
      "text": "%t"
    },
    "detach": false
  },
  "series": [{
      "values": [
        56.33
      ],
      "text": "Internet Explorer"
    },
    {
      "values": [
        24
      ],
      "text": "Chrome"
    },
    {
      "values": [
        10.4
      ],
      "text": "Firefox"
    },
    {
      "values": [
        4.8
      ],
      "text": "Safari"
    },
    {
      "values": [
        1.1
      ],
      "text": "Opera"
    }
  ]
};

zingchart.render({
  id: 'myChart',
  data: myConfig,
  height: 400,
  width: '100%'
});

/**
 * Handle the click event. Based on the plot clicked
 * re-direct the user!
 */
zingchart.node_click = function(e) {
  switch (e.plotindex) {
    case 4:
      window.open('https://www.opera.com/', '_blank');
      break;
    case 3:
      window.open('https://www.apple.com/safari/', '_blank');
      break;
    case 2:
      window.open('https://www.mozilla.org', '_blank');
      break;
    case 1:
      window.open('https://www.google.com/chrome/', '_blank');
      break;
    default:
      window.open('https://www.microsoft.com/en-us/download/internet-explorer.aspx', '_blank');
      break;
  }
}