<!doctype html>
<html>
<head>
<title>Timeline</title>
<script type="text/javascript" src="https://unpkg.com/vis-timeline@latest/standalone/umd/vis-timeline-graph2d.min.js"></script>
<link href="https://unpkg.com/vis-timeline@latest/styles/vis-timeline-graph2d.min.css" rel="stylesheet" type="text/css" />
<style type="text/css">
body,
html {
font-family: arial, sans-serif;
font-size: 11pt;
}
textarea {
width: 400px;
height: 200px;
}
.buttons {
margin: 20px 0;
}
.buttons input {
padding: 10px;
}
#visualization {
width: 500px;
}
</style>
</head>
<body>
<div id="visualization"></div>
<div class="buttons">
<input
type="button"
id="load"
value="↓ Load"
title="Load data from textarea into the Timeline"
/>
<input
type="button"
id="save"
value="↑ Save"
title="Save data from the Timeline into the textarea"
/>
</div>
<textarea id="data">
[
{
"id": 1,
"content": "item 1",
"start": "2014-01-01T01:00:00"
},
{
"id": 2,
"content": "item 2",
"start": "2014-01-01T02:00:00"
},
{
"id": 3,
"content": "item 3",
"start": "2014-01-01T03:00:00"
},
{
"id": 4,
"content": "item 4",
"start": "2014-01-01T04:00:00",
"end": "2014-01-01T04:30:00"
},
{
"id": 5,
"content": "item 5",
"start": "2014-01-01T05:00:00",
"type": "point"
},
{
"id": 6,
"content": "item 6",
"start": "2014-01-01T06:00:00"
}
]
</textarea>
<script type="text/javascript">
var txtData = document.getElementById("data");
var btnLoad = document.getElementById("load");
var btnSave = document.getElementById("save");
// Create an empty DataSet.
// This DataSet is used for two way data binding with the Timeline.
var items = new vis.DataSet();
// create a timeline
var container = document.getElementById("visualization");
var options = {
editable: true,
};
var timeline = new vis.Timeline(container, items, options);
function loadData() {
// get and deserialize the data
var data = JSON.parse(txtData.value);
// update the data in the DataSet
//
// Note: when retrieving updated data from a server instead of a complete
// new set of data, one can simply update the existing data like:
//
// items.update(data);
//
// Existing items will then be updated, and new items will be added.
items.clear();
items.add(data);
// adjust the timeline window such that we see the loaded data
timeline.fit();
}
btnLoad.onclick = loadData;
function saveData() {
// get the data from the DataSet
//
// Note that we specify the output type of the fields start and end
// as "ISODate", which is safely serializable. Other serializable types
// are "Number" (unix timestamp), "ASPDate" or "String" (without timezone!).
//
// Alternatively, it is possible to configure the DataSet to convert
// the output automatically to ISODates like:
//
// var options = {
// type: {start: 'ISODate', end: 'ISODate'}
// };
// var items = new vis.DataSet(options);
// // now items.get() will automatically convert start and end to ISO dates.
//
var data = items.get({
type: {
start: "ISODate",
end: "ISODate",
},
});
// serialize the data and put it in the textarea
txtData.value = JSON.stringify(data, null, 2);
}
btnSave.onclick = saveData;
// load the initial data
loadData();
</script>
</body>
</html>
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