title: Regular expression in javascript to remove anything that is not: a-z 0-9 and hyphen
body: <p>Thanks in advance.</p>
  
  <p>I would like a regular expression that removes anything that is NOT alpha numeric and a hyphen. So allowed are A-Z 0-9 and -.</p>
  
  <p>Also, how could I apply that to a string in Javascript?</p>
  
  <p>Thanks again.</p>