File --> Setting --> Editor --> General --> Appearance --> Show hard wrap and visual guides ( Configured in Code Style options ) 取消勾選 --> Apply --> OK
在最後側的 Show hard wrap and visual guides ( Configured in Code Style options ) 下面有個
show method separators 意思是顯示方法的分割線, java 表現良好, js 表現不是很好, 所以建議去掉
