javascript - 循环访问对象时，如何以编程方式创建同名变量？

Question

我有一些看起来像这样的对象，但列出了几辆车

let snapshot = [
    {
        "vehicle": "2015 Ford Mustang EcoBoost Premium",
        "link": "details9.html",
        "img": "css/images/vehicles/progressiveJPG/spotlight-mustang2.jpg",
        "trim": "GT Premium 2dr Coupe",
        "price": 16998,
        "priceSpecial": 19000,
        "priceAvg": 21470,
        "priceMonthly": 253,
        "miles": 37132,
        "milesAvg": 31029
    }
]

然后我想循环使用这样的东西

for (var i = 0; i < snapshot.length; i++) {
    let vehicle = snapshot[i].vehicle;
    let link = snapshot[i].link;
    let img = snapshot[i].img;
    let trim = snapshot[i].trim;
    let price = snapshot[i].price;
    let priceSpecial = snapshot[i].priceSpecial;
    let priceAvg = snapshot[i].priceSpecial;
    let priceMonthly = snapshot[i].priceMonthly;
    let miles = snapshot[i].miles;
    let milesAvg = snapshot[i].milesAvg;
}

然后，我将使用模板字符串配置输出，并在需要时插入这些变量。我的问题是，我可以动态创建这些与对象键同名的变量吗？或者是否有必要。例如，我是否应该将每个项目称为 snapshot[i].vehicle ？

Answer 1

My question is, can I dynamically create these variables that have the same name as the object key or is it even necessary. Should I just refer to each item as snapshot[i].vehicle for instance?

您目前做得很好

for (var i = 0; i < snapshot.length; i++) {
    let vehicle = snapshot[i].vehicle;

    console.log(vehicle)
    console.log(snapshot[i].vehicle)
}

上面的代码两次打印出相同的值，只是通过不同的句柄

您是否应该将所有属性放入相应的变量中，或者是否应该直接引用 snapshot[i] 基本上取决于您。当代码变得太困惑而无法轻松阅读时，我通常会选择变量解决方案。

我建议您为了可读性而编写代码，而不是为了某些效率概念而编写代码，否则无论如何也不会让您的脚本运行明显更快