Field.id
| Property Description | Returns the internal ID of a standard or custom body or sublist field. | 
| Type | string (read-only) | 
| Module | |
| Supported Script Types | Client scripts For more information, see SuiteScript 2.x Script Types. | 
| Since | 2016.2 | 
Syntax
          Important: 
          
        The following code sample shows the syntax for this member. It is not a functional example. For a complete script example, see N/currentRecord Module Script Samples.
          //Add additional code 
...
var id = objField.id;
...
//Add additional code