我是PHP和Javascript的新手。 我需要从 JSON 创建应该从 URL 读取的 pi 图表。
我尝试创建圆周率图以直接给定 json 数据，它可以工作。 我的代码如下：-
<!DOCTYPE html>
<html>
<head>
<title></title>
<link href="http://cdn-na.infragistics.com/igniteui/2018.1/latest/css/themes/infragistics/infragistics.theme.css" rel="stylesheet" />
<link href="http://cdn-na.infragistics.com/igniteui/2018.1/latest/css/structure/infragistics.css" rel="stylesheet" />
<script src="http://ajax.aspnetcdn.com/ajax/modernizr/modernizr-2.8.3.js">
</script>
<script src="http://code.jquery.com/jquery-1.11.3.min.js"></script>
<script src="http://code.jquery.com/ui/1.11.1/jquery-ui.min.js"></script>
<script src="http://cdn-na.infragistics.com/igniteui/2018.1/latest/js/infragistics.core.js"></script>
<script src="http://cdn-na.infragistics.com/igniteui/2018.1/latest/js/infragistics.dv.js"></script>
</head>
<body>
<style type="text/css">
#chart { position: relative;
float: left;
margin-right: 10px;
margin-bottom: 10px;
}
</style>
<div id="chart"></div>
<script type="text/javascript">
$(function () {
var data = [
{ "Badge_SubDomain": "Data Architecture", "count": "1333"},
{ "Badge_SubDomain": "Data Integration", "count": "849"},
{ "Badge_SubDomain": "Data Platform", "count": "250"},
];
$("#chart").igPieChart({
width: "435px",
height: "435px",
dataSource: data,
dataValue: "count",
dataLabel: "Badge_SubDomain",
labelsPosition: "bestFit" });
});
</script>
</body>
</html>
来自 URL 的 JSON 数据是 ：-
[{
"Domain":"Artificial Intelligence",
"Count":"46"
}, {
"Domain":"Data Architecture",
"Count":"21"
}, {
"Domain":"Data Science",
"Count":"50"
}]
我需要从 URL 读取数据而不是直接给出值。JSON 数据中的"计数"是字符串格式，它需要更改浮点格式以绘制 pi 图。如何更改代码？
$.get("url", function(data, status){
变量数据 = [ {"域"："人工智能"，"计数"："46"}， {"域"："数据架构"，"计数"："21"}， {"域"："数据科学"，"计数"："50"}， ]
finalArray = data.map(data => parseFloat(data.Count));
}(; 结果 = [46， 21， 50]