var folderSearch = {
      folderID: 6,
      folderName: 'PDF',
      filters: [],
      columns: []
    }

folderSearch.filters.push(new nlobjSearchFilter('name', null, 'is', folderSearch.folderName))
folderSearch.filters.push(new nlobjSearchFilter('isinactive', null, 'is', 'F'))

folderSearch.columns.push(
      new nlobjSearchColumn('description', 'file'),
      new nlobjSearchColumn('name', 'file'),
      new nlobjSearchColumn('url', 'file'),
      new nlobjSearchColumn('internalid', 'file')
    )

folderSearch.searchResult = nlapiSearchRecord(
      'folder',
      null,
      folderSearch.filters,
      folderSearch.columns
    )