Question

需要你的帮助，我把这个数组放在＆＃34;服务器＆＃34; js文件，与服务一起存储在allplayers = []; 我想过滤数组，只剩下爵士乐队员（在球员= [];）使用下面的代码。知道为什么它不起作用？感谢

var players = [
    {team: 'bulls', fullName: 'Kerr', position: 'SG', ranking: '7', id: '1' },
    {team: 'jazz',fullName: 'stockton', position: 'PG', ranking: '9', id: '2'},
    {team: 'jazz',fullName: 'malone', position: 'PF', ranking: '8', id: '3'}
];

export class PlayersComponent implements OnInit {
  players = [];
  allplayers = [];
  bullsPlayers = [];

  constructor(private _playerService: PlayerService) {}

  filterjazzplayers(){
    for (let i = 0; i < this.allplayers.length; i++) {
        if (this.allplayers[i].team == 'jazz') {
          this.players.push(this.allplayers[i]);
        }
    }
  }

  ngOnInit (){
    this._playerService.getPlayers()
    .subscribe(
      allplayers => this.allplayers = allplayers,
      error =>  console.log(<any>error)
    );

    this.filterjazzplayers();
  }

Answer 1

我可能错了，但我认为在创建具有相同名称的新数组时可能会出现问题。它可能无法分辨本地球员阵列和首发球员阵列之间的区别。以下代码在html文件中作为简单的javascript工作正常。希望这可以帮助您找到遇到问题的地方。

<!DOCTYPE html>
<html>
<script>
var players = [
    {team: 'bulls', fullName: 'Kerr', position: 'SG', ranking: '7', id: '1' },
    {team: 'jazz',fullName: 'stockton', position: 'PG', ranking: '9', id: '2'},
    {team: 'jazz',fullName: 'malone', position: 'PF', ranking: '8', id: '3'}
];

  var newPlayers = [];

  function filterJazzPlayers()
  {
    for(let i = 0; i < players.length;  i++)
    {
       if(players[i].team == 'jazz')
       {
          newPlayers.push(players[i]);
       }
    }
  }

  filterJazzPlayers();
  for(var j = 0; j < newPlayers.length; j++)
  {
    console.log(newPlayers[j].fullName);  
  }



  </script>
  <html>

根据属性从对象数组中过滤对象

1 个答案: