title: best way to check is element visible protractor
body: <p>Somebody knows the best way to check is element visible or no with the protractor?
  I do something like this:</p>
  
  <pre><code>element.isPresent().then(result=&gt;{
        expect(result).toBeFalsy();
  });
  </code></pre>
  
  <p>It works fine. But I wolud like to check is element visible.</p>
  
  <p>If I use:</p>
  
  <pre><code>element.isDisplayed().then(result=&gt;{
         expect(result).toBeFalsy();
  });
  </code></pre>
  
  <p>method isDisplayed return <em>Failed: No element found using locator</em>
  How to check is element not visible on the page?</p>