从角度为5的数组中获取值

Question

我想从数组中检索值，我的代码就像

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

但是我得到像这样的数组

我试过像role=roleData[0];但是给你undefined可以帮助我

    []
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

你必须采取this.roleData = data['data']

由于data['data']会返回array，因此将该数组推送到第一个index是错误的;

this.roleData = [];

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

如果您想append the data，还可以使用for loop

提供数据

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