Highchart IE8的圓餅圖 無法輸出

解決方法：

打開 highcharts.src.js

找到
 /**
  * Override the base drawDataLabels method by pie specific functionality
  */
  drawDataLabels: function () { ...

在底下的

for (pos = centerY - radius - distanceOption; pos <= centerY + radius + distanceOption; pos += labelHeight) {
    slots.push(pos);
}

改為

if (labelHeight == 0)
    labelHeight = halves[0][0].dataLabel.height;

for (pos = centerY - radius - distanceOption; pos <= centerY + radius + distanceOption; pos += labelHeight) {
                        slots.push(pos);
}

在網頁中加入引用 highcharts.src.js