DO NOT EDIT > ON BLOG >jsRule > history > time > tooltip

<!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"]; // Global wrapper
    window.customFncs = {};

    var myConfig = {
      type: "line",
      title: {
        text: 'Custom Tooltip History'
      },
      tooltip: {
        jsRule: "window.customFncs.formatTooltip()"
      },
      series: [{
          values: [1, 3, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 4]
        },
        {
          values: [6, 7, 8, 7, 6, 7, 8, 9, 8, 7, 8, 7, 8, 9, 8]
        }
      ]
    };

    // simple associative array
    var tooltipHistoryHash = [];

    /*
     * Function under our ZC wrapper. Will
     * be fired when the node is hovered over
     *
     * @param {object} p ZingChart callback argument. 
     * is associated to various graph properties
     */
    window.customFncs.formatTooltip = function(p) {
      console.log(p);
      var plotIndex = p.plotindex;
      var nodeIndex = p.nodeindex;
      var hashId = 'p:' + plotIndex + 'n:' + nodeIndex;
      var tooltipText = "";

      // Simple logic, if exists grab the value. Else let user
      // know its the first time
      if (tooltipHistoryHash[hashId]) {

        // Get the time elapsed since the last hover
        var elapsed = Math.floor((new Date().getTime() - tooltipHistoryHash[hashId]) / 1000);
        tooltipText = "Last Time Hovered: ";

        // If it's less than 0, they hovered less than a second ago
        if (elapsed === 0) {
          tooltipText += "less than a second ago!";
        } else {
          tooltipText += elapsed.toString() + " seconds ago";
        }

      } else {
        tooltipText = "First Time Hovering!";
      }

      // Assign into associative array (hash)
      tooltipHistoryHash[hashId] = new Date().getTime();

      // Return and object with multiple properties
      return {
        text: tooltipText,
        backgroundColor: "#222"
      }
    }

    zingchart.render({
      id: 'myChart',
      data: myConfig,
      height: 400,
      width: 600
    });
  </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>

// Global wrapper
window.customFncs = {};

var myConfig = {
  type: "line",
  title: {
    text: 'Custom Tooltip History'
  },
  tooltip: {
    jsRule: "window.customFncs.formatTooltip()"
  },
  series: [{
      values: [1, 3, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 4]
    },
    {
      values: [6, 7, 8, 7, 6, 7, 8, 9, 8, 7, 8, 7, 8, 9, 8]
    }
  ]
};

// simple associative array
var tooltipHistoryHash = [];

/*
 * Function under our ZC wrapper. Will
 * be fired when the node is hovered over
 *
 * @param {object} p ZingChart callback argument. 
 * is associated to various graph properties
 */
window.customFncs.formatTooltip = function(p) {
  console.log(p);
  var plotIndex = p.plotindex;
  var nodeIndex = p.nodeindex;
  var hashId = 'p:' + plotIndex + 'n:' + nodeIndex;
  var tooltipText = "";

  // Simple logic, if exists grab the value. Else let user
  // know its the first time
  if (tooltipHistoryHash[hashId]) {

    // Get the time elapsed since the last hover
    var elapsed = Math.floor((new Date().getTime() - tooltipHistoryHash[hashId]) / 1000);
    tooltipText = "Last Time Hovered: ";

    // If it's less than 0, they hovered less than a second ago
    if (elapsed === 0) {
      tooltipText += "less than a second ago!";
    } else {
      tooltipText += elapsed.toString() + " seconds ago";
    }

  } else {
    tooltipText = "First Time Hovering!";
  }

  // Assign into associative array (hash)
  tooltipHistoryHash[hashId] = new Date().getTime();

  // Return and object with multiple properties
  return {
    text: tooltipText,
    backgroundColor: "#222"
  }
}

zingchart.render({
  id: 'myChart',
  data: myConfig,
  height: 400,
  width: 600
});