title: Javascript: what's the most elegant way to check whether A is equal to B or C?
body: <p>I need to evaluate a variable and check if it's equal to one of two other variables.</p>
  
  <p>I do it like this: 
  <code>if (a == b || a == c)
      {
      }</code></p>
  
  <p>I feel there's got to be a better way to evaluate variables in this manner. Is there?</p>