title: React: Removing a class styling after componentWillUpdate
body: <p>How do you remove class after component becomes updated? For example, </p>
  
  <pre><code>//fire update where fieldname is array of changed fields
  componentWillUpdate(){
     $(`.input-${fieldName}`).addClass('highlight');
  }
  </code></pre>
  
  <p>I want to fire this function after the event handler gets clicked</p>
  
  <pre><code>removeFields (fieldName) {
       //remove highlight updated field name when it is updated
       $(`.input-${fieldName}`).removeClass('highlight');
  }
  </code></pre>