How to block a "Comma" in HTML input with Firefox browser?

This Javascript code works for Opera Browser:

          // ----- Block the "COMMA" for all inputs.
     $(document).keydown(function(e) {
         var keyCode = e.keyCode || e.which;
         if(keyCode==188){
             //  alert("COMMA has been pressed on the keyboard...") ;
             e.preventDefault();   // Note, "preventDefault" has to be within "if".
         }

     });

CodePudding user response：

keyCode has been deprecated. Use e.key instead.

document.addEventListener('keydown', e => {
  if (e.key === ',') {
        e.preventDefault();
        return false;
    }
})

CodePudding user response：

Found this : https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/keyCode

Would that be the reason ?

CodePudding user response：

Here is what worked for Firefox and 2 other browsers:

           // ----- Block the "COMMA" for all inputs.
     document.addEventListener('keydown', function(e) {
               if (e.key === ',') {
                   e.preventDefault();
                   return false;
               }
            })

Thanks