title: Token '==' is unexpected ngClass
body: <p>hello i am trying to use several expression in my <code>ng-class</code> directive but i keep getting this error in my browser console:</p>
  
  <pre><code>Error: [$parse:syntax] Syntax Error: Token '==' is unexpected, expecting [:] at column 13 of the expression [{ isWorking == true }] starting at [== true }].
  </code></pre>
  
  <p>This is my code:</p>
  
  <pre><code>ng-class="{ 'btn-danger': isReady == true || isError == true, 'btn-warning': isWorking == true, 'btn-success': isSuccess == true }" 
  </code></pre>
  
  <p>Could someone please tell me what i am doing wrong here?</p>