title: javascript regexp pattern definition
body: <p>I need help </p>
  
  <p>I have a form feild I need to add validation to. The format of the value has to be specific. I want to define a regex pattern to handle it.</p>
  
  <p>The format needs to  allow L123456</p>
  
  <p>L = it has to be L which is the start of out skus
  123456 = I need to confirm they are entering a 6 digit number.</p>
  
  <p>thanks</p>
  
  <p>Jeff</p>