Canvasjs顯示內容的工具提示會在第一次鼠標移動後顯示，但會被替換

Question

我更改CanvasJS圖形的工具提示內容。它在文檔中完成，並且工作。但是最近（不確定何時），我發現無論我在圖形選項中寫入ToolTip.content的內容是什麼，它僅在第一次將鼠標移動到圖上時顯示，下次工具提示完全替換爲默認值時。這裏是我的圖形代碼：

var options_seg = { 
      title: { 
       text: "" 
      }, 
      culture: "en", 
      zoomEnabled: true, 
      exportEnabled: true, 
      animationEnabled: false, 
      axisX: { 
       labelFontSize: 11, 
       gridColor: "Silver", 
       tickColor: "silver" 
      }, 
      axisY: { 
       title: "Formula values", 
       titleFontSize: 14, 
       labelFontSize: 11, 
       gridColor: "Silver", 
       tickColor: "silver", 
       lineColor: "#C24642" 
      }, 
      toolTip: { 
       shared: true, 
       content: function (e) 
       { 
        var ret = ""; 
        if (e.entries[ 0 ].dataPoint.label) 
         ret = "<b>" + e.entries[ 0 ].dataPoint.label + "</b><br>"; 
        else 
        { 
         if (e.entries[ 0 ].dataPoint.x) 
         { 
          if (e.entries[ 0 ].dataSeries.xValueType == "dateTime") 
           ret = "<b>" + $.format.date(e.entries[ 0 ].dataPoint.x, "yyyy-MM-dd HH:mm") + "</b><br>"; 
          else 
           ret = "<b>" + e.entries[ 0 ].dataPoint.x + "</b><br>"; 
         } 
        } 

        var show_vals = []; 
        for (var t = 0; t < e.entries.length; t++) 
         if (e.entries[ t ].dataSeries.visible) 
          show_vals[ show_vals.length ] = {col: e.entries[ t ].dataSeries.color, key: e.entries[ t ].dataSeries.name, v: e.entries[ t ].dataPoint.y}; 

        customSortObjByIntParameter(show_vals, "v", false); 

        var max = Math.min(50, show_vals.length); 
        for (t = 0; t < max; t++) 
         ret += "<div style='white-space:nowrap; font-size:11px; line-height:13px;'><span style='color:" + show_vals[ t ].col + "'>" + 
          show_vals[ t ].key + "</span> : <b>" + show_vals[ t ].v + "</b></div>"; 

        return ret; 
       } 
      }, 
      data: graphs_seg, 
      legend: { 
       fontSize: 11, 
       verticalAlign: "center", 
       horizontalAlign: "right", 
       cursor: "pointer", 
       itemclick: function (e) 
       { 
        if (typeof(e.dataSeries.visible) === "undefined" || e.dataSeries.visible) 
        { 
         e.dataSeries.visible = false; 
        } 
        else 
        { 
         e.dataSeries.visible = true; 
        } 
        e.chart.render(); 
       } 
      } 
     }; 

$chart_holder_seg.CanvasJSChart(options_seg); 
$chart_holder_seg.CanvasJSChart().render(); 

Answer 1

開始工作的時候更換

 toolTip: { 
      shared: true, 
      content: function (e) ... 

到

 toolTip: { 
      shared: true, 
      contentFormatter: function (e) ... 

不知道，爲什麼之前的工作。