function(){ return '<span style="color:red;"> '+this.seriesName+' </span>'+'<br>' +'<span style="color:yellow;"> '+this.value+' </span>'+'<br>' +'<span style="color:blue;font-size:36PX"> '+100*this.percentage.toFixed(2)+'%'+' </span>' }
直接这边设置,不用自定义