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我使用下面的片段来填充Google Chart -将数据传递给JavaScript函数
<script type="text/javascript">
google.load("visualization", "1", { packages: ["corechart"] });
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = google.visualization.arrayToDataTable([
['Year', 'Sales', 'Expenses'],
['2004', 1000, 400],
['2005', 1170, 460],
['2006', 660, 1120],
['2007', 1030, 540]
]);
var options = {
title: 'Company Performance'
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
这工作一种享受,并根据需要创建一个折线图。
不过,我希望将数据从我的代码传递给这个函数的背后 -
protected void Page_Load(object sender, EventArgs e)
{
string JsonString = "{'res':[{'category':'A','count':17167},{'category':'B','count':18183},{'category':'C','count':17972},{'category':'D','count':18539}]}";
Jobj = JObject.Parse(JsonString);
// extract values from Json
foreach (var response in Jobj["res"])
{
string category= (string)response["category"];
int count = (int)response["count"];
// put values into format that can be passed to the javascript function
}
}
然后用像 -
function drawChart() {
var data = google.visualization.arrayToDataTable([<%=Data Values%>]);
凡count
和category
是X轴和Y轴值和17167,18183 etc
是图上的点。 但是,显然上述语法不正确,我如何修改函数来接受我的Json数据?
找到[此处](https://developers.google.com/chart/interactive/docs/reference#DataTable)文档有帮助吗?它似乎描述你需要什么...... – Floris