如何在 Angular 中过滤对象上的数据

我使用此功能从后端获取数据

  private loaddata(): void {
    this.dataService.loaddata().pipe(
      tap((response: any) => {
        this.persons = response.results;
        this.personmembertrue = this.persons.filter(x => x.is_family_member === 'false')
      }),
      takeUntil(this.onComponentDestroy)
    ).subscribe();
  }

并console.log(response)显示如下 JSON

{
    "count": 38,
    "next": null,
    "previous": null,
    "results": [
        {
            "id": 113,
            "foreigner": false,
            "outside_community": false,
            "nipt": "",
            "nid": "G45675570K",
            "is_family_member": true
        },
        {
            "id": 115,
            "foreigner": false,
            "outside_community": false,
            "nipt": "",
            "nid": "K30776771A",
            "is_family_member": false
        },
        {
            "id": 116,
            "foreigner": false,
            "outside_community": false,
            "nipt": "",
            "nid": "J305070577",
            "is_family_member": false
        }...
      ]
    }

我想要的是具有的数据，"is_family_member": false为此我创建this.personmembertrue = this.persons.filter(x => x.is_family_member === 'false')

这部分代码显示为空。

任何想法请如何显示数据 "is_family_member": false