I want to design javascript calculator some one should help me with the codes

Den how are you d one doing it again... U jez want to collect codes and compile... U re nt doin anyfng.. Google your problem I am sure u will plenty answers online

I have done that already, I just need some one to explain the fuction codes or invent handler Fø̲̣̣я̅ clear, add, multiply , subtract, equal to , backspace ,. Can some one creat a function. Fø̲̣̣я̅ that A̶̲̥̅̊₪d̶̲̥̅̊ explain it to me ?

So you dont event understand anything about the programming, Guy that will be a little difficult here.
Maybe you post the code online here anybody might try to help