title: Angular 2 ngClass: Get Got interpolation ({{}}) where expression was expected when trying to display json on html
body: <p>I'm new to Angular 2 and was hoping to get some help from the community.  I'm currently trying to implement a dynamic/conditional implementation of ngClass in a <code>&lt;tr&gt;</code> element of my html view.  The trufy used is a variable and its original value comes from a JSON object set on my Componenet:</p>
  
  <pre><code>&lt;td [ngClass] = "{weak : {{jsonInMyComponenet.element}}, neutral : !{{jsonInMyComponenet.element}}}"  &gt;&lt;/td&gt;
  </code></pre>
  
  <p>When I use the code above I get this error:</p>
  
  <p>Got interpolation ({{}}) where expression was expected</p>
  
  <p>If I remove the curly brackets I get no errors but the page doesn't render the element, so I can't see the class implementation of weak nor neutral.  What am I'm doing wrong?</p>