搜索JSON值多層次深

Question

我有以下的數據對象，並最終會有內entities更多類似的：

function loadCardLibrary() { 
    var cardLibrary = { 
     entities: [ 
      { 
       name: "Spareparts", 
       values: { 
        sickness: 0, 
        attack: 0, 
        scrap: 3, 
        manaCost: 0 
       }, 
       apply: [ 
        applyCreature("Mech"), 
        applyHealth(1), 
        applyNoAttack(true) 
       ] 
      } 
     ] 
    }; 
    return cardLibrary; 
} 

我試圖寫一個函數（見本example）來搜索name值，然後再在該對象和搜索，檢查是否有特定apply值，就像這樣：

function checkHasNoAttack(entityName) { 
    for (var entity in cardLibrary.entities) { 
     if (cardLibrary.entities[entity].name === entityName) { 
      // for debugging 
      console.log(cardLibrary.entities[entity]); 
      console.log(); // blank line 
      for (var applied in cardLibrary.entities[entity].apply) { 
       if (cardLibrary.entities[entity].apply[applied].applyNoAttack === true) { 
        console.log(entityName + " cannot attack."); 
       } else { 
        console.log("test"); 
        break; 
       } 
      } 
     } 
    } 
} 

當我後立即調用它，就像這樣：

var canItAttack = checkHasNoAttack("Spareparts"); 

...這就是結果：

{ 
    name: 'Spareparts', 
    values: { 
     sickness: 0, 
     attack: 0, 
     scrap: 3, 
     manaCost: 0 
    }, 
    apply: [ 'Mech', 1, true ] 
} 

test 

代替test它來源於else，我試圖登錄的得到它響應第一if聲明，並記錄：

備件無法攻擊。

的理解是更復雜的邏輯最終將取代console.log那裏我真的需要這個工作，但一直與它修修補補，我只是似乎無法得到它的權利。任何幫助非常感謝！

Answer 1

這是非常簡單的：

function check(a) { 
    var result = null; 
    cardLibrary.entities.forEach(function(b){ 
     if (b.name === a) { 
      if (b.apply[2] === true) { 
       console.log(a + " cannot attack!"); 
      } else { 
       console.log("test"); 
      } 
      result = b; 
     } 
    }); 
    return result; 
} 

apply是一個數組，你必須使用[2]來選擇值

---

陣列在此做一個醜陋的工作，我建議您修改apply轉化爲對象：

apply: { 
    creature: applyCreature("Mech"), 
    health: applyHealth(1), 
    noAttack: applyNoAttack(true) 
} 

然後你可以使用這段代碼：

function check(a) { 
    var result = null; 
    cardLibrary.entities.forEach(function(b){ 
     if (b.name === a) { 
      if (b.apply.noAttack === true) { 
       console.log(a + " cannot attack!"); 
      } else { 
       console.log("test"); 
      } 
      result = b; 
     } 
    }); 
    return result; 
}