title: ng-if - checking for null value
body: <p>I have a loop that runs through a data set and determines the folder setup for a href. I have a ng-if for each of the options but I need to add a check to one of the ng-ifs. I need a way to check if a value is null. I have used something like:  </p>
  
  <pre><code> ng-if="!shortcut.SAM3Link" 
  </code></pre>
  
  <p>The problem with this is that if a value in my database is not null but does not have a value it does not recognize the difference.  I need a way to specifically check for null rather than not having a value. </p>
  
  <p>Basically I need a way to determine between a NULL value in my database and text/blank using a ng-if.  </p>