javascript - 如何列出元素，包括值(value)、名称、面额？

Question

我有一个像这样的对象:

  var currencyTypes = {
    NOK: {value:1.00000, name: "Norske kroner", denomination: "kr" },
    EUR: {value:0.10733, name: "Europeiske euro", denomination: "€" },
    USD: {value:0.12652, name: "United States dollar", denomination: "$" },
    GBP: {value:0.09550, name: "Pound sterling", denomination: "£" },
  };

我找到了一种列出所有关键对象的方法:

var keyVal = [];
for(var v in currencyTypes) keyVal.push(v);

"There are " + keyVal.length + " different currencies here: " + keyVal

这列出了所有货币类型:挪威克朗、欧元、美元、英镑

但是如何打印包含键、值、名称、面额的列表呢？我尝试了 keyVal.properties 但没有用。我试图在这里寻找解决方案，但没有找到任何东西。我想要的是看起来像这样的输出:

NOK, Norske kroner, 1 kr
EUR, European euros, 0.10733 €
and so on

Answer 1

您可以通过这种方式访问​​它。这个might帮助你。

 var currencyTypes = {
    NOK: {value:1.00000, name: "Norske kroner", denomination: "kr" },
    EUR: {value:0.10733, name: "Europeiske euro", denomination: "€" },
    USD: {value:0.12652, name: "United States dollar", denomination: "$" },
    GBP: {value:0.09550, name: "Pound sterling", denomination: "£" },
  };
  
  for(var type in currencyTypes)
  {
    console.log("Currency: " + type);
    
    console.log("Value: " + currencyTypes[type].value);
    console.log("Name: " + currencyTypes[type].name);
    console.log("Denomination: " + currencyTypes[type].denomination);
    
    console.log("\n");
  }