Javascript function need allow numbers, dot and comma

Question

I need to create a function to allow numbers dot and comma. So anyone corrects the following function

function on(evt) {
  var theEvent = evt || window.event         


        

Answer 1

Sometimes /^[0-9.,]+$/ is not work If not, then you could do something like this:

/^(?:[\d-]*,?[\d-]*\.?[\d-]*|[\d-]*\.[\d-]*,[\d-]*)$/