Изменение свойства объектов внутри цикла forEach

Question

Я хочу установить команды

opponent = search_abbreviation

- это массив командных объектов, которые до l oop выглядят так:

var team = {
          teamId: team_id,
          teamAbbreviation: abbreviation,
          gamePlayedId: game_id,
          totalPlaysFor: offensePlays,
          totalYardsFor: offenseYds,
          yardsPerPlayFor: offenseAvgYds,
          opponent: '',
          totalPlaysAgainst: 0,
          totalYardsAgainst: 0,
          yardsPerPlayAgainst: 0
        };

У меня есть следующее код, чтобы найти противника, сопоставляя gamePlayedId друг с другом, затем он обновит защитную (против) статистику и свойства противника. Что я делаю неправильно, что не позволяет мне изменять свойство оппонента?

var teams = [
{
          teamId: 0,
          teamAbbreviation: 'abbreviation1',
          gamePlayedId: 11,
          totalPlaysFor: 12,
          totalYardsFor: 13,
          yardsPerPlayFor: 14,
          opponent: 'op',
          totalPlaysAgainst: 0,
          totalYardsAgainst: 0,
          yardsPerPlayAgainst: 0
},
{
          teamId: 1,
          teamAbbreviation: 'abbreviation2',
          gamePlayedId: 11,
          totalPlaysFor: 12,
          totalYardsFor: 13,
          yardsPerPlayFor: 14,
          opponent: 'op2',
          totalPlaysAgainst: 0,
          totalYardsAgainst: 0,
          yardsPerPlayAgainst: 0
}];

const result = teams.forEach(({ teamAbbreviation, gamePlayedId, teamId }) => {
      var search_gamePlayedId = gamePlayedId;
      var search_teamId = teamId;
      var search_abbreviation = teamAbbreviation;
      teams.forEach(({ opponent, gamePlayedId, teamId }) => {
        if (search_gamePlayedId === gamePlayedId && search_teamId !== teamId) {
          opponent = search_abbreviation;
          // Modify more properties
        }
      });
    });
    
console.log(result)

Answer 1

opponent ссылается на область памяти, отличную от teams[n].opponent в вашем коде.

teams.forEach(({ opponent, gamePlayedId, teamId }, index) => {... // adding index

// then 
teams[index].opponent = 'something'

или

teams.forEach(team => {
    team.opponent = 'something'
})

Answer 2

teams.forEach( (team1) ) => {
  teams.forEach( (team2) => {
    if (team1.gamePlayedId === team2.gamePlayedId && team1.teamId !== team2.teamId) {
      team2.opponent = team1.teamAbbreviation;
      // Modify more properties
    }
  });
});