Question

I'm having an issue with High Charts I don't understand. I'm able to download the chart from the browser but it does not display.

Here is my javascript file.

chart.js

var cpvmPartners = [];
var cpvmPlannedCPM = [];
graphData = []


$(function(){
    $.getJSON('/cpvmdata', function(data) {
        for(k in data){
             graphData.push([data[k]['partner'],data[k]['plannedcpm']])
        }
});


    $(function () {
        $('#cpvmSummary').highcharts({
            chart: {
                type: 'column'
            },
            title: {
                text: 'World\'s largest cities per 2014'
            },
            subtitle: {
                text: 'Source: <a href="http://en.wikipedia.org/wiki/List_of_cities_proper_by_population">Wikipedia</a>'
            },
            xAxis: {
                type: 'category',
                labels: {
                    rotation: -45,
                    style: {
                        fontSize: '13px',
                        fontFamily: 'Verdana, sans-serif'
                    }
                }
            },
            yAxis: {
                min: 0,
                title: {
                    text: 'Population (millions)'
                }
            },
            legend: {
                enabled: false
            },
            tooltip: {
                pointFormat: 'Population in 2008: <b>{point.y:.1f} millions</b>'
            },
            series: [{
                name: 'Population',
                data: graphData ,
                dataLabels: {
                    enabled: true,
                    rotation: -90,
                    color: '#FFFFFF',
                    align: 'right',
                    format: '{point.y:.1f}', // one decimal
                    y: 10, // 10 pixels down from the top
                    style: {
                        fontSize: '13px',
                        fontFamily: 'Verdana, sans-serif'
                    }
                }
            }]
        });
    });
});

This is the html

 <div class="container">

        <!-- Portfolio Item Heading -->
        <div class="row">
            <div class="col-lg-12">
                <h1 class="page-header">CPVM Summary
           <!--          <small>CPVM Summary</small> -->
                </h1>
            </div>
        </div>
   <!-- jQuery -->
    <script src="js/jquery.js"></script>

    <script src="js/cpvmGraphs.js"></script>


    <!-- Bootstrap Core JavaScript -->
    <script src="js/bootstrap.min.js"></script>


    <!-- High Charts -->
    <script src="https://code.highcharts.com/highcharts.js"></script>
    <script src="https://code.highcharts.com/modules/exporting.js"></script>

Not sure what else to do at this point pr why it is loading in one place but not the other, any info would be greatly appreciated.

Answer 1

这是因为您在DOM准备好的数据中获取数据＆＃39;功能，然后在另一个图表中呈现图表。您的数据获取是异步的，因此在它返回之前它不存在，但您在此之前渲染图表。

要解决此问题，请将所有图表内容放在一个单独的函数中，假设我们称之为renderChart，然后在获得JSON之后，在另一个函数中，渲染图表传递数据。

以下是文档中的示例：

$(document).ready(function() {

    var options = {
        chart: {
            renderTo: 'container',
            type: 'spline'
        },
        series: [{}]
    };

    $.getJSON('data.json', function(data) {
        options.series[0].data = data;
        var chart = new Highcharts.Chart(options);
    });

});

http://www.highcharts.com/docs/working-with-data/custom-preprocessing#3

High chart data downloads but does not display in browser using node

1 个答案: