從角度5的數組中獲取值

Question

我想從數組中檢索值我的代碼就像

this.RoleServiceService.getRoleById(this.id).subscribe(data => {
  this.roleData.push(data['data']);
  console.log(this.roleData);
})

但我越來越像這樣

我已經嘗試過像role=roleData[0]; 但是給不確定的你可以幫我嗎

    []
0
:
Array(4)
0
:
{id: 5, name: "edit_page", guard_name: "api", created_at: "2018-03-30 10:09:38", updated_at: "2018-03-30 10:09:38", …}
1
:
{id: 6, name: "create_page", guard_name: "api", created_at: "2018-03-30 10:09:38", updated_at: "2018-03-30 10:09:38", …}
2
:
{id: 7, name: "create_post", guard_name: "api", created_at: "2018-04-06 11:11:40", updated_at: "2018-04-06 11:11:40", …}
3
:
{id: 8, name: "view_post", guard_name: "api", created_at: "2018-04-06 11:11:40", updated_at: "2018-04-06 11:11:40", …}
length
:
4

Answer 1

您必須接受this.roleData = data['data']

由於data['data']返回一個array ，因此將數組推入第一個index是錯誤的；

this.roleData = [];

this.RoleServiceService.getRoleById(this.id).subscribe(data => {
  this.roleData = data['data'];
  console.log(data['data']);
  console.log(this.roleData);
})

如果要append the data ，也可以使用for loop

附加數據：

this.RoleServiceService.getRoleById(this.id).subscribe(data => {
  data['data'].forEach(element => {
    this.roleData.push(element)
 });
  console.log(data['data']);
  console.log(this.roleData);
})