echart给柱状图添加气泡提示

series: {
markPoint: {
symbol: ‘pin’,//标记类型
symbolSize: 40,//图形大小
itemStyle: {
normal: {
label: {
show: true,
color: ‘#fff’ //自定义气泡里的文字颜色
}
},
color: ["#409eff", “#c4f8f1”]
},
data: [{ type: ‘max’, name: ‘最大值’ }, { type: ‘min’, name: ‘最小值’ }]
}
}