javascript - 删除和添加到数组的逻辑

Question

我通过参数获取数组并获取索引 然后我拼接，但是我的this.players还是一样。

makeMatch(condition) {
  const matchedPlayers = this.players.filter(condition);
  this.removePlayers(matchedPlayers);
  return new Match(matchedPlayers);
}
removePlayers(players) {
  players.forEach(p => {
    this.removePlayer(p);
  });
}
removePlayer(player) {
  const index = this.players.findIndex(p => p.id === player.id);
  console.log(index);
  if (index > -1) {
    this.players.splice(index, -1);
  }
  console.log(this.players);
}

在我的索引上使用 splice 后，我的播放器集合保持不变

即使在使用后也要从列表中删除。切片我的列表保持相同的大小

我的函数将玩家添加到我的数组中

// addPlayers add multiple players into queue
addPlayers(players) {
  this.players = this.players.concat(players);
}

// addPlayer adds a single player into queue
addPlayer(player) {
  this.players.push(player);
}

Answer 1

您将 -1 作为第二个参数传递给 splice，它应该是要删除的项目数(即 1)。

此外，还可以简化 removePlayer 并且根本不使用 splice:

removePlayer(player) {
  this.players = this.players.filter(p => p.id !== player.id)
}