echarts饼状图 legend 字体大小

在Echarts中，可以通过修改legend的textStyle属性来调整legend的字体大小。具体的做法是在legend项中添加textStyle属性，然后设置fontSize属性为所需的字体大小。例如，可以使用以下代码来设置legend的字体大小为12px：

legend: {
  textStyle: {
    fontSize: 12
  }
}

这样就可以将legend的字体大小设置为12px。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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