How to formatted tooltip value?

[BigFaceMaster]

const options = {
   tooltip: {
      formatter: params => {
        custom function body
         return 'result'
      }
   }
}

[RafaelCENG]

You can use valueFormatter. From the echarts docs

 tooltip: {
        trigger: "axis",
        valueFormatter: function (params) {
          return `${params}W`;
        },
      },

Now if you want to show only the value for example you can do something like this.

   formatter: function (params) {
          return `${params[0].data}.W`;
        },

Also this is working 100% on single LineChart.

[BigFaceMaster]

在Tooltip中使用 自定义的 html ，似乎依旧有问题

[zhiqingchen]

html not supported
#16