Question

我想将动态数据放入raphael饼图中。我不能在我的javascript代码的window.onload（）之外编写以下代码。有没有人在rapahael饼图中添加动态数据？这是我目前的代码：

<script language="javascript" type="text/javascript">
    window.onload = function () {
        var r = Raphael("holder");
        r.g.txtattr.font = "12px 'Fontin Sans', Fontin-Sans, sans-serif";
        r.g.text(320, 100, "Interactive Pie Chart").attr({"font-size": 20});
        var pie = r.g.piechart(320, 240, 100, [55, 20, 13, 32, 5, 1, 2], {legend: ["%%.%%" , "%%.%%","%%.%%"], legendpos: "west"});
    }
</script>

这个55,20,13,32,5,1,2数据的内容我想在JSP页面中编写从数据库返回的数据。我该如何添加？我有数据

<c:forEach var="Detail" items="${DetailRow.List.}">'${Detail.Text}',${Detail.Count}</c:forEach>

我想将${Detail.Text}',${Detail.Count}添加到饼图中。如何将其转换为([[],[]..])？

Answer 1

基兰，

如果我理解你，你想做这样的事情：

window.onload = function () {
  var r = Raphael("holder"),
  mydata = //AJAX call to get data from Database
  //Parse mydata to have the format you need ([[],[]..])...
  r.g.piechart(320, 240, 100,mydata);
};

如果你可以在你的问题中显示一些代码那就太好了:)。但我认为这个想法就是这样，对可以从数据库中获取数据的脚本进行AJAX调用。

Answer 2

我就是这样做的。我正在使用ASP.Net MVC，但您可以使用任何框架或语言。

values，legendvalues和sectorLinkValues是页面中创建的.Net List对象。

%>
<script type="text/javascript">
    $(document).ready(function () {
        <% =truViewPOC.Helpers.GraphaelChartHelper.GetJavaScript(100, 150, 90, title, values, legendValues, sectorLinkValues, null) %>
     });

这是我的GetJavaScript方法：

StringBuilder javaScriptBuilder = new StringBuilder();
javaScriptBuilder.Append("window.onload = function () {var r = Raphael('holder');");
AppendCenterCoordinates(ref javaScriptBuilder);

AppendLegendInfo(ref javaScriptBuilder, title);
AppendPieChartInfo(ref javaScriptBuilder, xCoord, YCoord,radius, values, legendValues,sectorLinkValues);
AppendFunctionInfo(ref javaScriptBuilder);
javaScriptBuilder.Append("}");

private static void AppendFunctionInfo(ref StringBuilder javaScriptBuilder)
        {
            javaScriptBuilder.Append("pie.hover(function () {this.sector.stop();this.sector.scale(1.1, 1.1, this.cx, this.cy);if (this.label) {this.label[0].stop();this.label[0].scale(1.5);this.label[1].attr({ 'font-weight': 800 });}}, function () {this.sector.animate({ scale: [1, 1, this.cx, this.cy] }, 500, 'bounce');if (this.label) {this.label[0].animate({ scale: 1 }, 500, 'bounce');this.label[1].attr({ 'font-weight': 400 });}}); ");
            javaScriptBuilder.Append("pie.each(function(){ this.sector.label=this.sector.value;   })");
        }
        private static void AppendPieChartInfo(ref StringBuilder javaScriptBuilder, int xCoord, int YCoord, int radius, List<decimal> values, List<string> legendValues, List<string> sectorLinkValues)
        {
            javaScriptBuilder.AppendFormat("var pie = r.g.piechart({0},{1},{2},{3},", xCoord, YCoord, radius, ConvertValuesToString(values));
            javaScriptBuilder.Append("{");
            javaScriptBuilder.AppendFormat("legend: {0}, legendpos: 'east', href:{1}",ConvertValuesToString(legendValues),ConvertValuesToString(sectorLinkValues));
            javaScriptBuilder.Append("});");
        }

private static void AppendLegendInfo(ref StringBuilder javaScriptBuilder, string title)
        {
            javaScriptBuilder.Append("r.g.text(140, 24, " + "'" + title +  "'" + ").attr({ 'font-size': 16 });");
        }

 private static string ConvertValuesToString(List<decimal> values)
        {
            string finalString = "[";


            for (int i = 0; i < values.Count; i++)
            {
                finalString += values[i].ToString();
                if (i<values.Count-1)
                {
                     finalString+= ",";
                }


            }
            finalString += "]";
            return finalString;

希望这会有所帮助..如果您对此代码有任何疑问，请告诉我。谢谢。维卡斯 }

拉斐尔饼图，放动态数据？

2 个答案: