title: Regular expression for double equals
body: <p>Anyone have a good regex to match <code>==</code> and <code>!=</code> but NOT <code>===</code> nor <code>!==</code> (I'm planning to use it as a simple check on javascript code)?</p>
  
  <p>I tried <code>[^=]==[^=]</code> but this fails at the start and end of strings.</p>