title: Should I use single quotation mark or double to describe jquery?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/242813/when-to-use-double-or-single-quotes-in-javascript">When to Use Double or Single Quotes in JavaScript</a>  </p>
  </blockquote>
  
  
  
  <p>I'm confusing what I should use in jQuery.
  Some use single some use double quotation mark.
  For example</p>
  
  <pre><code>$('.class1').removeClass('class1')
  $(".class1").removeClass("class1")
  </code></pre>
  
  <p>Also, alert as well</p>
  
  <pre><code>alert("aa");
  alert('aa');
  </code></pre>
  
  <p>which one is correct?</p>