我只想显示带有年份的时间表(使用Google图表)。
但是,examples on Google Charts Timelines' webpage始终包含年份,月份和天(例如new Date(1789, 3, 30)
)。
我曾尝试将new Date()
减少到仅一年(例如new Date(2019)
),但是Google图表将其解释为秒(2.019 seconds
)。
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
google.charts.load("current", {packages:["timeline"]});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var container = document.getElementById('div_timeline');
var chart = new google.visualization.Timeline(container);
var dataTable = new google.visualization.DataTable();
dataTable.addColumn({ type: 'string', id: 'Nr' });
dataTable.addColumn({ type: 'string', id: 'Journal' });
dataTable.addColumn({ type: 'date', id: 'Founded' });
dataTable.addColumn({ type: 'date', id: 'Now' });
dataTable.addRows([
[ '1', 'Journal of Leisure Research', new Date(1969), new Date(2019) ],
[ '2', 'Critical Sociology', new Date(2009), new Date(2019) ],
[ '3', 'Geographical Analysis', new Date(1909), new Date(2019) ]
]);
chart.draw(dataTable,options);
}
</script>
使用此代码,休闲研究期刊现在为1.969秒至2.019秒。
相反,我希望图表将1969年分配给2019年。
我该怎么做?感谢您的帮助!
答案 0 :(得分:0)
只需将日期设置为1月1日:
<html>
<head>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
google.charts.load('current', {'packages':['timeline']});
google.charts.setOnLoadCallback(drawChart);
function drawChart() {
var container = document.getElementById('timeline');
var chart = new google.visualization.Timeline(container);
var dataTable = new google.visualization.DataTable();
dataTable.addColumn({ type: 'string', id: 'Nr' });
dataTable.addColumn({ type: 'string', id: 'Journal' });
dataTable.addColumn({ type: 'date', id: 'Founded' });
dataTable.addColumn({ type: 'date', id: 'Now' });
dataTable.addRows([
[ '1', 'Journal of Leisure Research', new Date(1969,1,0), new Date(2019,1,0) ],
[ '2', 'Critical Sociology', new Date(2009,1,0), new Date(2019,1,0) ],
[ '3', 'Geographical Analysis', new Date(1909,1,0), new Date(2019,1,0) ]]);
chart.draw(dataTable);
}
</script>
</head>
<body>
<div id="timeline" style="height: 180px;"></div>
</body>
</html>