javascript - 如何使用 for of 和 for in 语句仅获取 Javascript 对象数组中的一个值？

Question

这是我的对象数组，我想在其中获取特定值。

const customerData = [
  { customerName: "Jay", Purchased: "phone", Price: "€200" },
  { customerName: "Leo", Purchased: "car", Price: "€2000" },
  { customerName: "Luk", Purchased: "Xbox", Price: "€400" },
];

在这个函数中，我将所有值放在一起。但我想要特定的值，以便使用 for of 和 for in 语句在控制台中显示这样的内容。 “亲爱的 Jay，感谢您以 200 欧元的价格购买了一部手机”

function getValue(){
 for(let key of customerData){
for(let value in key){
  console.log(key[value]) //I get all values 
  //console.log(value)  // I get all keys
}
 }
}

getValue();```

Answer 1

为此，您不需要多个 for 循环。您可以使用 forEach() 来完成此操作循环和template literal像:

var customerData = [{ customerName: "Jay", Purchased: "phone", Price: "€200" },
  { customerName: "Leo", Purchased: "car", Price: "€2000" },
  { customerName: "Luk", Purchased: "Xbox", Price: "€400" },
];

function getValue() {
  customerData.forEach(x => {
    console.log(`Dear ${x.customerName} thank you for purchase of a ${x.Purchased} for the price of ${x.Price}`)
  })
}

getValue();