2
检索来自物体的值我已经对象如何通过使变量作为密钥
position = [
{exchange: 'KRAKEN', USD: 1800, EUR: 800, GBP: 800, BTC: 800},
{exchange: 'BTCE', USD: 800, EUR: 800, GBP: 800, BTC: 800},
{exchange: 'BITSTAMP', USD: 600, EUR: 800, GBP: 800, BTC: 800},
{exchange: 'MYWALLET', USD: 1300, EUR: 800, GBP: 800, BTC: 800}
]
的下面阵列I也有2个变量: myExchange和myCurr
我试图从数组中提取相关货币值。 即如果myExchange ='KRAKEN'和myCurr = USD,那么我需要获取结果= 1800
我在coffeescript(和下划线._作为库)中使用以下代码,但它返回为' undefined'
objBuy = _.find(position, (objBuy) ->
objBuy.exchange is buyExchange
)
objBuyCurr = _.find(objBuy, (objBuyCurr) ->
objBuy._key is buyCurr
)
最终我的目标是将对象属性/键作为变量动态传递。即: 值= position.myExchange.myCurr(不position.KRAKEN.USD)
谢谢Suseika。然而我需要的是能够说:position.myExchange.myCurr。即动态地变换我们的变量。这可能吗? – 2015-02-09 15:51:25
@saurabhgoyal我更新了答案 – gvlasov 2015-02-09 15:58:57