用于初始化图表的配置选项。
Highcharts.setOptions({
});
Highcharts.stockChart({
用于动态更新更新图表实例，详情 类参考。
The shadow of the box. Works best with borderWidth or backgroundColor. Since 2.3 the shadow can be an object configuration containing color, offsetX, offsetY, opacity and width.
borderWidth
backgroundColor
color
offsetX
offsetY
opacity
width
