Javascript google.visualization.DataTable,日期未定义
考虑以下代码:Javascript google.visualization.DataTable,日期未定义,javascript,callback,google-visualization,Javascript,Callback,Google Visualization,考虑以下代码: google.load("visualization", "1", { packages: ["corechart"] }); google.setOnLoadCallback(drawChart); function drawChart() { var data = google.visualization.DataTable(); data.addColumn('datetime', 'Time'); data.addColumn('numb
google.load("visualization", "1", {
packages: ["corechart"]
});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.DataTable();
data.addColumn('datetime', 'Time');
data.addColumn('number', 'Leads');
data.addRow([Date.parse("2013-08-17 10:12:18"), 0]);
data.addRow([Date.parse("2013-08-17 09:13:42"), 14]);
data.addRow([Date.parse("2013-08-17 10:00:05"), 15]);
data.addRow([Date.parse("2013-08-17 11:12:18"), 3]);
var options = {
title: 'Company Performance',
fontSize: '12px',
curveType: 'function',
pointSize: 5,
hAxis: {
title: 'Daily Report',
titleTextStyle: {
color: '#FF0000'
}
},
vAxis: {
title: 'Leads',
titleTextStyle: {
color: '#FF0000'
}
}
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
现在,上面的代码被支持加载GoogleChartAPI,定义了一个DataTable
&生成一个折线图图形,但它没有。相反,我在尝试添加列时遇到了以下错误
TypeError: data is undefined #at this line --> data.addColumn('datetime', 'Time')
有人能告诉我我缺少了什么吗?在创建
google.visualization.Datatable
的新对象时,您没有使用new
function drawChart() {
// var data = google.visualization.DataTable(); missed new keyword
var data = new google.visualization.DataTable();
//...
}