title: Regex, end of string must contain number
body: <p>I just need a really simple javascript regex test to make sure the last character of a given string is a number 0-9. I keep finding different variations of this in my searches but none that really match the simplicity of what I need. So for instance</p>
  
  <pre><code>var strOne = "blahblahblahblah"; // === false
  var strTwo = "blahblahblahblah///"; // === false
  var strThree = "blahblahblahblah123"; // === true
  </code></pre>
  
  <p>Any help is appreciated... I'm still trying to wrap my head around the rules of regex.</p>