input validation

[hassank1]

Hi

 

I need a function that would return true if user input alphanumeric and/or  . , space , &

 

any other character will return false

[rhodesa]

function validate ( input ) {
  return new Boolean(input.match(/^[a-zA-Z\d. &]+$/));
}

[hassank1]

what regular expression should I do to check if :

 

input start and end with a digit and contains only digits or ,

 

ex: accepted : "123,232,1232"    or  "2324"

 

rejected : ",4343"  or  "3434," or ","

 

etc..

 

 

[rhodesa]

/^\d+(,\d+)*$/