test/timeline_groups.html

<!DOCTYPE HTML>
<html>
<head>
  <title>Timeline | Group example</title>

  <style>
    body, html {
      font-family: arial, sans-serif;
      font-size: 11pt;
    }

    #visualization {
      box-sizing: border-box;
      width: 100%;
    }

    .vis.timeline .item.red,
    .vis.timeline .item.red.selected {
      background-color: red;
      color: white;
    }

    .vis.timeline .item.green,
    .vis.timeline .item.green.selected {
      background-color: green;
      color: white;
    }

  </style>

  <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.js"></script>

  <script src="../dist/vis.js"></script>
  <link href="../dist/vis.css" rel="stylesheet" type="text/css" />
<script>(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)})(window,document,'script','//www.google-analytics.com/analytics.js','ga');ga('create', 'UA-61231638-1', 'auto');ga('send', 'pageview');</script></head>
<body>

<div>
  <label for="orientation">Orientation</label>
  <select id="orientation">
    <option value="both">both</option>
    <option value="bottom" selected>bottom</option>
    <option value="top">top</option>
  </select>
</div>
<script>
  var o = document.getElementById('orientation');
  o.onchange = function () {
    timeline.setOptions({
      orientation: o.value
    });
  };
</script>
<br>

<div id="visualization"></div>
<div style="height: 1000px;"></div><!-- for testing vertical scroll on touch devices-->

<script>
  var moment = vis.moment;

  var now = moment().minutes(0).seconds(0).milliseconds(0);
  var groupCount = 3;
  var itemCount = 20;

  // create a data set with groups
  var names = ['John (0)', 'Alston (1)', 'Lee (2)', 'Grant (3)'];
  var groups = new vis.DataSet();
  for (var g = 0; g < groupCount; g++) {
    groups.add({id: g, content: '<a href="http://google.com"><span style="color:#97B0F8;">' + names[g] + '</a>', title: 'Title of group ' + g, 'className': 'myGroup'});
  }

  // create a dataset with items
  var items = new vis.DataSet({
    type: {start: 'Moment', end: 'Moment'}
  });
  for (var i = 0; i < itemCount; i++) {
    var start = now.clone().add(Math.random() * 200, 'hours');
    var end = Math.random() > 0.5 ? start.clone().add(24, 'hours') : undefined;
    var group = Math.floor(Math.random() * groupCount);
    items.add({
      id: i,
      group: group,
      content: 'item ' + i +
          ' <a href="http://google.com"><span style="color:#97B0F8;">(' + names[group] + ')</span></a> ',
      start: start,
      end: end,
      title: 'Title for item ' + i,
      //type: 'box',
      className: 'myItem'
    });
  }

  // create visualization
  var container = document.getElementById('visualization');
  var options = {
    //orientation: 'top',
    multiselect: true,
    editable: {
      add: true,
      remove: true,
      updateTime: true,
      updateGroup: true
    },

//    orientation: {
//      item: 'top',
//      axis: 'both'
//    },

    onAdd: function (item, callback) {
      item.content = prompt('Enter text content for new item:', item.content);
      if (item.content != null) {
        callback(item); // send back adjusted new item
      }
      else {
        callback(null); // cancel item creation
      }
    },

    onMove: function (item, callback) {
      console.log('onMove', item)
      if (confirm('Do you really want to move the item to\n' +
          'start: ' + item.start + '\n' +
          'end: ' + item.end + '?')) {
        callback(item); // send back item as confirmation (can be changed)
      }
      else {
        callback(null); // cancel editing item
      }
    },

    onMoving: function (item, callback) {
      var min = moment().minutes(0).seconds(0).milliseconds(0).add(-2, 'day').toDate();
      if (item.start < min) {
        item.start = min;
      }
      //item.className = item.id > 3 ? 'red' : 'green';
      //item.group = Math.random() > 0.5 ? 2 : 1;
      //item.hasMoved = true;
      //item.content = Math.round(Math.random() * 4);

      callback(item); // send back item as confirmation (can be changed)
    },

    onUpdate: function (item, callback) {
      item.content = prompt('Edit items text:', item.content);
      if (item.content != null) {
        callback(item); // send back adjusted item
      }
      else {
        callback(null); // cancel updating the item
      }
    },

    onRemove: function (item, callback) {
      if (confirm('Remove item ' + item.content + '?')) {
        callback(item); // confirm deletion
      }
      else {
        callback(null); // cancel deletion
      }
    },

    //stack: false,
    //height: 200,
    groupOrder: 'content'
  };

  console.time('create timeline');
  var timeline = new vis.Timeline(container);
  console.timeEnd('create timeline');

  console.time('set options');
  timeline.setOptions(options);
  console.timeEnd('set options');

  console.time('set groups');
  timeline.setGroups(groups);
  console.timeEnd('set groups');

  console.time('set items');
  timeline.setItems(items);
  console.timeEnd('set items');

  timeline.on('select', function (selection) {
    console.log('select', selection);
  });

  /*
  timeline.on('rangechange', function (range) {
    console.log('rangechange', range);
  });
  timeline.on('rangechanged', function (range) {
    console.log('rangechanged', range);
  });
  */
//
  timeline.on('click', function (props) {
    console.log('click', props);
  });

  $(container).click(function (event) {
    console.log('click jquery', timeline.getEventProperties(event));
  });

  timeline.on('doubleClick', function (props) {
    console.log('doubleClick', props);
  });

  timeline.on('contextmenu', function (props) {
    console.log('contextmenu', props);
  });

  items.on('add',    console.log.bind(console));
  items.on('update', console.log.bind(console));
  items.on('remove', console.log.bind(console));

  groups.on('add',    console.log.bind(console));
  groups.on('update', console.log.bind(console));
  groups.on('remove', console.log.bind(console));

  function log (msg) {
    var logs = document.getElementById('logs');
    logs.innerHTML = msg + '<br>' + logs.innerHTML;
  }

</script>
<div id="logs"></div>
</body>
</html>