如何在角度2中进行全局搜索？

@Component({
  selector: 'app-search',templateUrl: 'src/search.component.html'
})
export class SearchComponent{

 invoiceList = [
  {invoiceNumber:  1234,];

 invoiceCats = [];
 invoiceStatuses = [];
 invoiceNumbers = [];
 invoiceFields = Object.keys(this.invoiceList[0]);

 invoiceStatus = "";
 invoiceCategory = "";
 invoiceNumber;
 invoiceSupplier;
 order = this.invoiceFields[0];

 searchResults = [];

 constructor() { 
   this.invoiceList.forEach(i => {
     if(this.invoiceCats.indexOf(i.invoiceCategory) === -1) {
      this.invoiceCats.push(i.invoiceCategory);
     }

     if(this.invoiceStatuses.indexOf(i.invoiceStatus) === -1) {
      this.invoiceStatuses.push(i.invoiceStatus);
     }

     this.invoiceNumbers.push(i.invoiceNumber);
   })
 }

 ngOnInit() {
 }

 searchNow(e) {
   e.preventDefault();
   this.searchResults = this.invoiceList.filter(i => {
     return (this.invoiceStatus ? i.invoiceStatus === this.invoiceStatus : true) 
        &&  (this.invoiceNumber ? i.invoiceNumber === this.invoiceNumber : true)
        &&  (this.invoiceSupplier ? i.invoiceSupplier === this.invoiceSupplier : true)
        &&  (this.invoiceCategory ? i.invoiceCategory === this.invoiceCategory : true)
   }).sort((a,b) => {
      if(['invoiceNumber','amount'].indexOf(this.order) > -1) return a[this.order] - b[this.order];
      if(['invoiceSupplier','invoiceStatus','invoiceCategory'].indexOf(this.order) > -1) return (a[this.order] == [a[this.order],b[this.order]].sort()[1] ? 1 : -1);
      if(this.order === 'date') {
        const x = new Date(a.date.split('/').reverse().join('/'));
        const y = new Date(b.date.split('/').reverse().join('/'));
        return x.getTime() - y.getTime();
      }
   })
 }

}

注意：构造函数内部的代码只是生成元数据.

<form (submit)="searchNow($event)">
    <table>
      <tr>
        <td>Invoice Number :</td>
        <td>
          <input name="invoiceNumber" [(ngModel)]="invoiceNumber" type="number">
        </td>

        <td>Invoice Supplier Name :</td>
        <td>
          <input name="invoiceSupplier" [(ngModel)]="invoiceSupplier" type="text">
        </td>
      </tr>

      <tr>
        <td>Invoice Status :</td>
        <td>
          <select name="invoiceStatus" [(ngModel)]="invoiceStatus">
            <option value="">Any</option>
            <option *ngFor="let iS of invoiceStatuses" [value]="iS">{{iS}}</option>
          </select>
        </td>

        <td>Invoice Category :</td>
        <td>

          <select name="invoiceCategory" [(ngModel)]="invoiceCategory">
            <option value="">Any</option>
            <option *ngFor="let iC of invoiceCats" [value]="iC">{{iC}}</option>
          </select>
        </td>
      </tr>

      <tr>
        <td>Order By:</td>
        <td>
          <select name="order" [(ngModel)]="order">
            <option *ngFor="let iF of invoiceFields" [value]="iF">{{iF}}</option>
          </select>
        </td>
      </tr>

      <tr>
        <td>
          <button type="submit">Search</button>
        </td>
        <td>
          <div class="detail">
            <button type="reset">Cancel</button>
          </div>
        </td>
      </tr>

    </table>
  </form>

  <div>
    <ul>
      <li *ngFor="let i of searchResults">Number: {{i.invoiceNumber}},Supplier: {{i.invoiceSupplier}},Date: {{i.date}}</li>
    </ul>
  </div>

注意：在Angular2中有很多甚至数百种方法可以使用表单,你可以使用任何你喜欢的方法,我只使用最简单的方法.