[GitHub] [incubator-echarts] linxinemily edited a comment on issue #4125: 如何在legend中显示value值？

[GitBox <gi...@apache.org>]

linxinemily edited a comment on issue #4125: 如何在legend中显示value值？
URL: https://github.com/apache/incubator-echarts/issues/4125#issuecomment-501965703
 
 
   另外一種方法可以透過訪問 this （需使用 arrow function）獲取vue component實例
   就能拿到 options.series[0].data
   
   ```
   formatter: name => {
               const data = this.options.series[0].data
               const totalValue = data.reduce((acc, item) => { 
                  acc += item.value;
                  return acc;
                }, 0)
               let targetValue
               data.forEach(item => {
                 if (item.name === name) {
                   targetValue = item.value
                 }
               })
              	const p = (targetValue / totalValue * 100).toFixed(2);
               return name + ' ' +  p + '%'
             }
   ```
   
   

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