N/ui/serverWidget Module
Form.getTab()
Method Description: Returns a tab object from its 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: 2016.1
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=Form.getTab(options)

// Code Example 1

//Add additional code

//...

var form = serverWidget.createForm({

    title : 'Simple Form'

});

form.addTab({

    id : 'tabid',

    label : 'Tab'

});

var tab = form.getTab({

    id : 'tabid'

});

//...

//Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_4550406903.html