<!DOCTYPE html>
<html lang="en-US">
<head>
<script src="https://www.gstatic.com/charts/loader.js"></script>
</head>
<body>
<div id="point">
</div>
<script>
google.charts.load('current', {'packages':['gantt']});
google.charts.setOnLoadCallback(drawChart);
function daysToMilliseconds(days) {
return days * 24 * 60 * 60 * 1000;
}
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Task ID');
data.addColumn('string', 'Task Name');
data.addColumn('date', 'Start Date');
data.addColumn('date', 'End Date');
data.addColumn('number', 'Duration');
data.addColumn('number', 'Percent Complete');
data.addColumn('string', 'Dependencies');
data.addRows([
['Study', 'Math',
new Date(2015, 0, 1), new Date(2015, 0, 5), null, 75, null],
['Chapter1', 'Ven diagram',
null, new Date(2015, 0, 9), daysToMilliseconds(3), 25, 'Study,chapter4'],
['chapter2', 'Geometery',
null, new Date(2015, 0, 7), daysToMilliseconds(1), 20, 'Study'],
['chapter3', 'Algebra',
null, new Date(2015, 0, 10), daysToMilliseconds(1), 0, 'chapter2,Chapter1'],
['chapter4', 'Trigonometry',
null, new Date(2015, 0, 6), daysToMilliseconds(1), 100, 'Study']
]);
var options = {
height: 400
};
var chart = new google.visualization.Gantt(document.getElementById('point'));
chart.draw(data, options);
}
</script> </body>
</html>