在数组对象中查找值并使用该对象中的其他值

Question

Can't find a the correct workflow to get the following from looping thro array:

• loop thro all the objects within the array and find a specific warehouse value
• if the value exists in any object, use that object which holds the specific warehouse value and return a price value within it

For example: If I would do a search for 1374610389 warehouse value I would get returned price of 78.00

 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

The find() method returns a value of the first element in the array that satisfies the provided testing function.

You could use the find method :

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);
  }
}

Get the length of the array using the length propertie and enumerate over it using a for .

Also check Zakaria Acharki answer, his is way more elegant.