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- <!DOCTYPE HTML>
- <html>
- <head>
- <title>Timeline | Item ordering</title>
-
- <style type="text/css">
- body, html {
- font-family: sans-serif;
- }
- p {
- max-width: 800px;
- }
- </style>
-
- <script src="../../../dist/vis.js"></script>
- <link href="../../../dist/vis-timeline-graph2d.min.css" rel="stylesheet" type="text/css" />
-
- <script src="../../googleAnalytics.js"></script>
- </head>
- <body>
- <h1>Item ordering</h1>
- <p>
- By default, the items displayed on the Timeline are unordered. They are
- stacked in the order that they where loaded. This means that way items are
- stacked can change while moving and zooming the Timeline.
- </p>
- <p>
- To display and stack the items in a controlled order, you can provide a
- custom sorting function via the configuration option <code>order</code>.
- </p>
- <p>
- WARNING: Custom ordering is only suitable for small amounts of items (up to a few
- hundred), as the Timeline has to render <i>all</i> items once on load to
- determine their width and height.
- </p>
- <p>
- <label for="ordering"><input type="checkbox" id="ordering" checked/> Apply custom ordering. Order items by their id.</label>
- </p>
-
- <div id="visualization"></div>
-
- <script type="text/javascript">
- // DOM element where the Timeline will be attached
- var container = document.getElementById('visualization');
-
- // Create a DataSet (allows two way data-binding)
- var items = new vis.DataSet();
- var date = vis.moment('2015-03-02');
- for (var i = 0; i < 100; i++) {
- date.add(Math.round(Math.random() * 2), 'hour');
- items.add({
- id: i,
- content: 'Item ' + i,
- start: date.clone(),
- end: date.clone().add(4, 'hour')
- });
- }
-
- function customOrder (a, b) {
- // order by id
- return a.id - b.id;
- }
-
- // Configuration for the Timeline
- var options = {
- order: customOrder,
- editable: true,
- margin: {item: 0}
- };
-
- // Create a Timeline
- var timeline = new vis.Timeline(container, items, options);
-
- var ordering = document.getElementById('ordering');
- ordering.onchange = function () {
- timeline.setOptions({
- order: ordering.checked ? customOrder: null
- });
- };
- </script>
- </body>
- </html>
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