check model value empty or null in javascript

This is my code

 <script>
 var _getValue = @myViewModel.myInfo.Name == null ? 'isNull' : 'notNull';
 </script>

The value @myViewModel.myInfo.Name is null in database , but this code always return notNull .
How can I properly check empty or null for that ?

You should add it in braces with a @ symbol

e.g.

<script>
    var _getValue = '@(myViewModel.myInfo.Name == null ? "isNull" : "notNull")';
</script>