title: Simplest way to check if a string converted to a number is actually a number in actionscript
body: <p>Not sure if this makes sense, but I need to check if a server value returned is actually a number. Right now I get ALL number values returned as strings
  ie '7'  instead of 7.</p>
  
  <p>What's the simplest way to check if string values can actually be converted to numbers?</p>