N/ui/serverWidget Module
Form.getSubtab()
Method Description: Returns a subtab by internal ID.
Returns: serverWidget.Tab object
Supported Script Types: SuiteScript 2.0 Suitelet Script Type and SuiteScript 2.0 User Event Script Type (beforeLoad(scriptContext))
Governance: None
Module: N/ui/serverWidget Module
Since: 2015.2
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=Form.getSubtab(options)

// Code Example 1

//Add additional code

//...

var form = serverWidget.createForm({

    title : 'Simple Form'

});

form.addSubtab({

    id : 'subtabid',

    label : 'Subtab'

});

var subtab = form.getSubtab({

    id : 'subtabid'

});

//...

//Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_4339693214.html