vis.js is a dynamic, browser-based visualization library
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<!DOCTYPE HTML>
<html>
<head>
<title>Timeline | Custom function label format example</title>
<style>
body, html {
font-family: arial, sans-serif;
font-size: 11pt;
}
#visualization {
box-sizing: border-box;
width: 100%;
height: 300px;
}
</style>
<!-- note: moment.js must be loaded before vis.js, else vis.js uses its embedded version of moment.js -->
<script src="http://cdnjs.cloudflare.com/ajax/libs/moment.js/2.8.4/moment.min.js"></script>
<script src="../../../dist/vis.js"></script>
<link href="../../../dist/vis-timeline-graph2d.min.css" rel="stylesheet" type="text/css" />
</head>
<body>
<p>
This example demonstrate using custom function label formats.
</p>
<div id="visualization"></div>
<script>
var now = moment().minutes(0).seconds(0).milliseconds(0);
var groupCount = 3;
var itemCount = 20;
// create a data set with groups
var names = ['John', 'Alston', 'Lee', 'Grant'];
var groups = new vis.DataSet();
for (var g = 0; g < groupCount; g++) {
groups.add({id: g, content: names[g]});
}
// create a dataset with items
var items = new vis.DataSet();
for (var i = 0; i < itemCount; i++) {
var start = now.clone().add(Math.random() * 200, 'hours');
var group = Math.floor(Math.random() * groupCount);
items.add({
id: i,
group: group,
content: 'item ' + i +
' <span style="color:#97B0F8;">(' + names[group] + ')</span>',
start: start,
type: 'box'
});
}
// create visualization
var container = document.getElementById('visualization');
var options = {
format: {
minorLabels: function(date, scale, step) {
var now = new Date();
var ago = now - date;
var divider;
switch (scale) {
case 'millisecond':
divider = 1;
break;
case 'second':
divider = 1000;
break;
case 'minute':
divider = 1000 * 60;
break;
case 'hour':
divider = 1000 * 60 * 60;
break;
case 'day':
divider = 1000 * 60 * 60 * 24;
break;
case 'weekday':
divider = 1000 * 60 * 60 * 24 * 7;
break;
case 'month':
divider = 1000 * 60 * 60 * 24 * 30;
break;
case 'year':
divider = 1000 * 60 * 60 * 24 * 365;
break;
default:
return new Date(date);
}
return (Math.round(ago * step / divider)) + " " + scale + "s ago"
},
majorLabels: function(date, scale, step) {
var now = new Date();
var ago = now - date;
var divider;
switch (scale) {
case 'millisecond':
divider = 1;
break;
case 'second':
divider = 1000;
break;
case 'minute':
divider = 1000 * 60;
break;
case 'hour':
divider = 1000 * 60 * 60;
break;
case 'day':
divider = 1000 * 60 * 60 * 24;
break;
case 'weekday':
divider = 1000 * 60 * 60 * 24 * 7;
break;
case 'month':
divider = 1000 * 60 * 60 * 24 * 30;
break;
case 'year':
divider = 1000 * 60 * 60 * 24 * 365;
break;
default:
return new Date(date);
}
return (Math.round(ago * step / divider)) + " " + scale + "s ago"
}
}
};
var timeline = new vis.Timeline(container);
timeline.setOptions(options);
timeline.setGroups(groups);
timeline.setItems(items);
</script>
</body>
</html>