獲取所有實例化的javascript對象並更新值

Question

下面是我有一個對象的簡化示例。我想要做的是當我調用更新方法時，它會根據所有對象進行更新。所以，我需要跟蹤莫名其妙的所有對象（我能做到這遊戲對象中？或者我需要包裝嗎？）

var Game = function() { 
    this.data  = []; 
} 

Game.prototype = { 

    add: function(game) { 
     this.data.push(game); 
    }, 
    update: function(game) { 
     for(i = 0; i < this.data.length; i++) { 
      if(this.data[i].id == game.id) { 
       this.data[i].name = game.name; 
      } 
     } 
    }, 
    get: function() { 
     console.log(this.data); 
    } 
} 


var g1 = new Game; 
g1.add({id: '5', name: 'firstname'}); 
g1.add({id: '6', name: 'secondname'}); 

var g2 = new Game; 
g2.add({id: '5', name: 'firstname'}); 
g2.add({id: '6', name: 'secondname'}); 

g1.update({id: '5', name: 'firstname-updated'}) 

g1.get(); 
g2.get(); 

基本上，如果你運行它，你會看到g1.get（）使用更新後的id 5寫入數據，其中as g2將仍然具有名稱爲'firstname'的原始id 5。

非常感謝您的幫助！

編輯：只是想補充，我仍然希望那裏有多個對象。並不總是，每個對象都有匹配的ID。但如果他們這樣做，他們都應該更新。

Answer 1

你可以這樣做：

function Game() { 
    this.data = []; 
} 

// Object to store games with the same id 
Game.games = {}; 

Game.prototype.add = function(game) { 

    // Add the game to the existing array with same id 
    if (Game.games[game.id]) { 
    Game.games[game.id].push(game); 

    // Or create new array if first with this id 
    } else { 
    Game.games[game.id] = [game]; 
    } 
    // other stuff 
} 

// Update all games with same id 
Game.prototype.update = function(game) { 
    var games = Game.games[game.id] 
    // games is a reference to an array of all the games with the same id 
} 

Answer 2

更新您的代碼如下，以得到期望的結果：

 var Game = function() { 
      //this.data  = []; 
     } 

     Game.prototype = { 

      data : [], 

      add: function(game) { 
       var found = false; 
       for(i = 0; i < this.data.length; i++) { 
        if(this.data[i].id == game.id) { 
         found = true; 
         break; 
        } 
       } 
       if(!found) { 
        this.data.push(game); 
       } 
      }, 
      update: function(game) { 
       for(i = 0; i < this.data.length; i++) { 
        if(this.data[i].id == game.id) { 
         this.data[i].name = game.name; 
        } 
       } 
      }, 
      get: function() { 
       console.log(this.data); 
      } 
     };