替换Angular 5

Question

我在角度4项目中有json对象。

  NationalityList: any[]; Nationality: any = {};

在具有名为＆＃34; Nation＆＃34;的属性的两个json对象中。 EthnicList持有多个国家名单。国籍用于绑定Entry字段中的模型。当我从EthnicList编辑一个国家;我正在抄袭＆＃34;国籍＆＃34;并在文本框中显示。当我输入文本框时，它在国籍列表和国籍中都有效。如何防止这种情况？

GetNationalities() {
  this.loading = true;
  var param = {};
  this.JsonApiService.CommonService('HCP/GetAllNationalityList', this.JsonApiService.encrypt(JSON.stringify(param)).toString()).subscribe((Resp) => {
    this.NationalityList = this.JsonApiService.decrypt(Resp);
    this.loading = false;
    this.DestroyDataTable();
  });
}

SaveNationality(f: NgForm) {
if (!f.valid) {
  this.InitializeAllValidation(f)
  return;
}
this.Nationality.Mode = 'ADD';
this.JsonApiService.CommonService('HCP/SaveNationality', this.JsonApiService.encrypt(JSON.stringify(this.Nationality)).toString()).subscribe((Resp) => {
  var Response = this.JsonApiService.decrypt(Resp);
  if (Response.Status == true) {
    this.toastr.success('Nationality has been added successfully', '');
    this.GetNationalities();
    this.Cancel();
    this.DestroyAllValidation(f);
  }
  else {
    if (Response.ResultMsg.length > 0)
      this.toastr.error(Response.ResultMsg, '');
    else
      this.toastr.error('Unable to save Nationality', '');
    }
  });
}