问在angular 4中以编程方式过滤行

EN

 <!-- Income table -->
            <div *ngIf="selectedFinancialOption===1 && fsIncomeStatementTable && fsIncomeStatementTable.length > 0" class="tab-pane fade active show" id="base-strategy--fs-statement" role="tabpanel" aria-labelledby="table-tab"
                aria-expanded="false">
                <table class="table">
                    <thead>
                        <tr style="height:50px">
                            <th *ngFor="let cell of fsIncomeStatementTable[0]"> {{cell}}</th>

                        </tr>
                    </thead>
                    <tbody>
                        <tr *ngFor="let row of fsIncomeStatementTable | slice:1" [ngClass]="{'net-cost': row[0] === incomeStatementStyles[0] || row[0] === incomeStatementStyles[1] || row[0] === incomeStatementStyles[2] || row[0] === incomeStatementStyles[3]}">
                            <td>{{row[0]}}</td>
                            <td *ngFor="let cell of row | slice:1">{{cell | shortAndBlankNumberFormat: 2}}</td>
                        </tr>
                    </tbody>
                </table>

            </div>
            <!-- Income table -->

    export const CONSTS: any = {

results: {

    financialStatement: {
        //TO DO SORT THIS OUT - Used for Styling
        incomeStatementStyling: 'Net premiums written|AY Underwriting Gain|Net Investment income|Net Operating Income|Net Income',
        cashFlowStyling: 'Net Cash provided by operating activities|Cash and Investments, end of year',
        balanceSheetStyling: 'Total Cash and Investment|Total Assets|Total Liabilites|Total Liabilities Total Sh. Equity'
    }
}
}

    const incomeStatementStyling: string[] = String(CONSTS.results.financialStatement.incomeStatementStyling).split('|');

    export class FinancialStatementComponent extends ReactiveComponent implements OnInit {
      isExpanded = false;

      incomeStatementStyles: string[] = incomeStatementStyling;

      constructor(private _projectionService: ProjectionService) {
    super();
  }

  @Input() set fsResult(value: FinancialStatementAnalysis) {
    this.processFSResults(value);
  }

   processFSResults(value: FinancialStatementAnalysis) {
    if (!value) {
      return;
    }
    this._fsIncomeStatementTable = this._projectionService.fsIncomeStatementResults(value.incomeStatement);

  }

      }