title: Using lodash not able to validate selected date
body: <p>I try to validate selected date from angularjs weather date is selected or not. So for this i use lodash.isEmpty it returns empty but the date is selected.</p>
  
  <pre><code> else if(lodash.isEmpty(exchangeRate.validTo)){
          console.log(exchangeRate.validTo);
          $scope.errorvalidTo = 'invalid'
      }
  </code></pre>
  
  <p>i have selected date but it always says empty </p>