Highchart.js - 爲系列返回undefined添加自定義鍵

Question

我已將自定義鍵（total）添加到Highcharts系列數組中，當我試圖從系列中調用「total」值時，它返回undefined，其他值如名稱和數據將得到返回，除了我自己添加的'總'鍵。有沒有辦法解決這個問題？

普萊斯看到下面的代碼：

$(function() { 
    Highcharts.chart('container', { 
     title: { 
      text: 'Monthly Average Temperature', 
      x: -20 //center 
     }, 
     subtitle: { 
      text: 'Source: WorldClimate.com', 
      x: -20 
     }, 
     xAxis: { 
      categories: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 
       'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'] 
     }, 
     yAxis: { 
      title: { 
       text: 'Temperature (°C)' 
      }, 
      plotLines: [{ 
       value: 0, 
       width: 1, 
       color: '#808080' 
      }] 
     }, 
     tooltip: { 
      valueSuffix: '°C' 
     }, 
     legend: { 
      layout: 'vertical', 
      align: 'right', 
      verticalAlign: 'middle', 
      borderWidth: 0 
     }, 
     series: [{ 
      name: 'Tokyo', 
      data: [7.0, 6.9, 9.5, 14.5, 18.2, 21.5, 25.2, 26.5, 23.3, 18.3, 13.9, 9.6], 
      total: 200 
     }, { 
      name: 'New York', 
      data: [-0.2, 0.8, 5.7, 11.3, 17.0, 22.0, 24.8, 24.1, 20.1, 14.1, 8.6, 2.5], 
      total: 300 
     }, { 
      name: 'Berlin', 
      data: [-0.9, 0.6, 3.5, 8.4, 13.5, 17.0, 18.6, 17.9, 14.3, 9.0, 3.9, 1.0], 
      total: 400 
     }, { 
      name: 'London', 
      data: [3.9, 4.2, 5.7, 8.5, 11.9, 15.2, 17.0, 16.6, 14.2, 10.3, 6.6, 4.8], 
      total: 500 
     }] 
    }); 

    var series = $('#container').highcharts().series; 
    //var series_total = []; 
    $.each(series,function(index,value){ 
      alert(value.total); 
    }); 

}); 

而且在小提琴： https://jsfiddle.net/7eb6vfdp/2/

Answer 1

嘗試alert(value.options.total);

edited fiddle