N/ui/serverWidget Module
AssistantStep.getFieldIds()
Method Description: Gets the IDs for all the fields in a step.
Returns: string[]
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=AssistantStep.getFieldIds()

// Code Example 1

//Add additional code

//...

var assistant = serverWidget.createAssistant({

    title : 'Simple Assistant'

});

var assistantStep = assistant.addStep({

    id : 'idname',

    label : 'Sample label'

});

assistant.addField({

    id : 'fieldid',

    type : serverWidget.FieldType.TEXT,

    label : 'Field'

});

var fieldIds = assistantStep.getFieldIds();

//...

//Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_4610728749.html