在數組對象中查找值並使用該對象中的其他值

Question

無法找到正確的工作流程以從循環thro數組中獲取以下內容：

• 循環遍歷數組中的所有對象並查找特定的warehouse值
• 如果該值存在於任何對象中，請使用包含特定warehouse值的對象並在其中返回price值

例如：如果我要搜索1374610389倉庫價值，我會得到78.00退貨價格

 var test = [ { lorem: "ipsum", dolor: "sit", price: "10.00", warehouse: 1157964289 }, { lorem: "ipsum", dolor: "sit", price: "22.00", warehouse: 1269753487 }, { lorem: "ipsum", dolor: "sit", price: "78.00", warehouse: 1374610389 }, { lorem: "ipsum", dolor: "sit", price: "32.00", warehouse: 1674985630 }, { lorem: "ipsum", dolor: "sit", price: "16.00", warehouse: 1847893458 } ] 

Answer 1

find（）方法返回數組中第一個滿足提供的測試函數的元素的值。

你可以使用find方法：

test.find(obj => obj.warehouse == '1374610389').price

 var test = [ { lorem: "ipsum", dolor: "sit", price: "10.00", warehouse: 1157964289 }, { lorem: "ipsum", dolor: "sit", price: "22.00", warehouse: 1269753487 }, { lorem: "ipsum", dolor: "sit", price: "78.00", warehouse: 1374610389 }, { lorem: "ipsum", dolor: "sit", price: "32.00", warehouse: 1674985630 }, { lorem: "ipsum", dolor: "sit", price: "16.00", warehouse: 1847893458 } ] console.log( test.find(obj => obj.warehouse == '1374610389').price); 

Answer 2

var test = [{
  lorem: "ipsum",
  dolor: "sit",
  price: "10.00",
  warehouse: 1157964289
}, {
  lorem: "ipsum",
  dolor: "sit",
  price: "22.00",
  warehouse: 1269753487
}, {
  lorem: "ipsum",
  dolor: "sit",
  price: "78.00",
  warehouse: 1374610389
}, {
  lorem: "ipsum",
  dolor: "sit",
  price: "32.00",
  warehouse: 1674985630
}, {
  lorem: "ipsum",
  dolor: "sit",
  price: "16.00",
  warehouse: 1847893458
}];
for (var i = 0; i < test.length; i++) {
  if (test[i].warehouse == 1374610389) {
    console.log(test[i].price);
  }
}

使用長度屬性獲取數組的長度，並使用for枚舉。

還檢查Zakaria Acharki的回答，他的方式更優雅。