title: Check if multiple elements with same class exist
body: <p>Wonder if there's any way to check if elements with the same class exists in a document.</p>
  
  <p>For example:</p>
  
  <pre><code>&lt;div class="panel"&gt;panel 1&lt;/div&gt;
  &lt;div class="panel"&gt;panel 2&lt;/div&gt;
  &lt;div class="panel"&gt;panel 3&lt;/div&gt;
  </code></pre>
  
  <p>JS:</p>
  
  <pre><code>if ( $('.panel')[0] ) {
      console.log('exists')
  }
  </code></pre>
  
  <p>.. but I want to check if MORE THAN ONE <code>panel</code> element exists, alteast 2. </p>