Node.js如何console.log出object-property +变量？

Question

我试图通过在objectProperty的末尾添加一个变量来选择属性来选择真/假语句：(appleAmount.amount+number)？你是怎么做到的？

let apple = 48;
let appleAmount = {
  amount0 : 20,
  amount1 : 40,
  amount2 : 48
}

let number = 2;
console.log(apple === appleAmount.amount+number);

Answer 1

在JavaScript中，您可以通过字符串名访问属性，而不仅仅是通过点运算符：

console.log(apple === appleAmount[`amount${number}`]); // If your version supports interpolation
console.log(apple === appleAmount['amount' + number]);