title: How to get the class of a field by javascript?
body: <p>i want to execute an if condition based on its class</p>
  
  <pre><code>var follow = document.getElementById('follow');
  
  if(the class of the variable follow is active){
  
  do this...
  
  
  }
  else{
  
  do this...
  
  
  }
  </code></pre>
  
  <p>how can i do it in javascript?</p>