摘要： 解决vue中使用echarts的formatter提示警告的问题 [Vue warn]: Property or method "formatter" is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option, or for class-based components, by initializing the property. See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties. 阅读全文