Retrieve value from object

Retrieve value from object

Hi,
 
I am using SharePoint Client object model to fetch data from a custom list.
 
I have a URL field which contains the url value.
 
I am trying to access the data, but I am getting as [Object].
 
code used is:
 
  1. function RenderHtmlOnSuccess()
  2.  {
  3. var enumerator = this.TestListItems.getEnumerator();
  4. while (enumerator.moveNext())
  5. {
  6. var currentItem = enumerator.get_current();
  7. var imagePath = currentItem.get_item("testfilePreviewPath");
  8.  }
  9. }
 
In F12 of IE, for currentItem.get_item("testfilePreviewPath"),  i can see the below:
 

{...} object
$2_1 = "url" string
$3_1 = "url" string

The data is there in $2_1 and $3_1..
 
what is $2_1 and $3_1?
 
 How to fetch the URL value?
 
Thanks