如何仅使用javascript / jquery在单击事件上绘制Google饼图?
香港专业教育学院试图在onclick事件上调用drawChart没有成功。
从api:
<html>
<head>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Task', 'Hours per Day'],
['Work', 11],
['Eat', 2],
['Commute', 2],
['Watch TV', 2],
['Sleep', 7]
]);
var options = {
title: 'My Daily Activities'
};
var chart = new google.visualization.PieChart(document.getElementById('piechart'));
chart.draw(data, options);
}
</script>
</head>
<body>
<div id="piechart" style="width: 900px; height: 500px;"></div>
</body>
</html>
要扩展davidkonrad的答案,您应该将click事件包装在API加载器的回调中,因为与Google服务器连接速度较慢的用户可以在API完成加载之前单击“绘制”按钮:
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Task', 'Hours per Day'],
['Work', 11],
['Eat', 2],
['Commute', 2],
['Watch TV', 2],
['Sleep', 7]
]);
var options = {
title: 'My Daily Activities'
};
var chart = new google.visualization.PieChart(document.getElementById('piechart'));
chart.draw(data, options);
}
function initialize () {
$(/* click event element selector */).click(function() {
drawChart();
});
}
google.setOnLoadCallback(initialize);
google.load("visualization", "1", {packages:["corechart"]});
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