饿了么组件，使用日期组件报警告，求解

Question

([Vue warn]: Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders. Instead, use a data or computed property based on the prop's value. Prop being mutated: "placement")

Answer 1

不要直接改变props

Answer 2

刚好看到过，ele自己的bug，好像最新版已经修复了，可以上github上看issue

Answer 3

可以先把当前element卸载掉，安装2.15.6版本。这个是一个pr引起的错误，github issue