在Javascript对象中求和两个值

Question

如果我有这样的javascript对象:

sampleObject[
   {
    suite: "Clubs",
    weight : 10
   },
   {
    suite: "Spades",
    weight : 6
   },
   {
    suite: "Hearts",
    weight : 2
   }
];

我如何找到重量属性的总和？

Answer 1

简单的减少应该是有效的.

var sum = sampleObject.reduce(( sum, card ) => sum + card.weight, 0 );