I want to write a regular expression using javascript or jquery to allow
comma delimited list of numbers OR
space delimited numbers OR
comma followed by a space delimited numbers OR
a combination of any of the above ex
anything that is not a digit, space or comma must be rejected

SHOULD PASS
111,222,333
111 222 333
111, 222, 333
111,222,333 444 555 666, 111, 222, 333,

should NOT pass:
111,222,3a
3a
111 222 3a etc etc

I tried the code below they seemed to work however when I typed
3a as a number, it PASSED!!! How? I cannot understand how my code allowed that letter to pass.

I want to reject anything that is not a space, comma or digit

or is there a better way to do this without regular expressions?
I looked in google and did not find any answer.

Thank you in advance for any help.

var isNumeric = /[d]+([s]?[,]?[d])*/.test(userInput);

var isNumeric = /^[ds,]*/.test(userInput);    

var isNumeric = /^[d]*[s,]*/.test(userInput); 

var isNumeric = /^[ds,]*/.test(userInput);    

var isNumeric = /d+s*,*/.test(userInput); 



if (isNumeric == false) {

    alert(isNumeric);

  return false;

}

else

      alert('is Numeric!!!');