vis.js is a dynamic, browser-based visualization library
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<!DOCTYPE HTML>
<html>
<head>
<title>Timeline | Groups ordering</title>
<style>
body, html {
font-family: arial, sans-serif;
font-size: 11pt;
}
#visualization {
box-sizing: border-box;
width: 100%;
height: 300px;
}
</style>
<script src="../../../dist/vis.js"></script>
<link href="../../../dist/vis.css" rel="stylesheet" type="text/css" />
<script src="../../googleAnalytics.js"></script>
</head>
<body>
<p>
This example demonstrates custom ordering of groups.
</p>
<div id="visualization"></div>
<script>
var groups = new vis.DataSet([
{id: 0, content: 'First', value: 1},
{id: 1, content: 'Third', value: 3},
{id: 2, content: 'Second', value: 2}
]);
// create a dataset with items
// note that months are zero-based in the JavaScript Date object, so month 3 is April
var items = new vis.DataSet([
{id: 0, group: 0, content: 'item 0', start: new Date(2014, 3, 17), end: new Date(2014, 3, 21)},
{id: 1, group: 0, content: 'item 1', start: new Date(2014, 3, 19), end: new Date(2014, 3, 20)},
{id: 2, group: 1, content: 'item 2', start: new Date(2014, 3, 16), end: new Date(2014, 3, 24)},
{id: 3, group: 1, content: 'item 3', start: new Date(2014, 3, 23), end: new Date(2014, 3, 24)},
{id: 4, group: 1, content: 'item 4', start: new Date(2014, 3, 22), end: new Date(2014, 3, 26)},
{id: 5, group: 2, content: 'item 5', start: new Date(2014, 3, 24), end: new Date(2014, 3, 27)}
]);
// create visualization
var container = document.getElementById('visualization');
var options = {
// option groupOrder can be a property name or a sort function
// the sort function must compare two groups and return a value
// > 0 when a > b
// < 0 when a < b
// 0 when a == b
groupOrder: function (a, b) {
return a.value - b.value;
},
editable: true
};
var timeline = new vis.Timeline(container);
timeline.setOptions(options);
timeline.setGroups(groups);
timeline.setItems(items);
</script>
</body>
</html>