I am replacing Special Character using but i don't want to replace dot . using java script or Jquery

Hi in file Upload the files those names consists Some Character such as  & #  etc files is not upalding so i try this below

  NewfileName=NewfileName.replace(/[^a-z0-9\s]/gi, '').replace(/[_\s]/g, ' ');     

Issue -But issue is its also replace Dot . So file Extension is also lost :(  

So i want Dot will not Replace and all other will replace

Shiv Sharma