在 JS 中获得函数后如何重命名对象键

Question

所以我在下面得到了一个问题......

function translateKey(student, keyToChange, translation) {  }

/*
This function will take an object representing a student's data, a key that needs changing, and its English translation.  
E.g. 
const student = {
  prénom: 'Carla',
  surname: 'Bruni',
  job: 'Artist'
}
const keyToChange = 'prénom'
const translation = 'firstName'

It returns a **new object** with the key successfully translated into English.
E.g. 
{
  firstName: 'Carla',
  surname: 'Bruni,
  job: 'Artist'
}
*/

我从...开始

function translateKey(student, keyToChange, translation) {

const translated = {keyToChange : translation};

const newObject = {};


// not really sure where to go from here, help please!

Answer 1

由于您的 objectif 是重命名对象键，您可以开始查看 this question，他的答案非常好。
您可以以ChaosPandion 的答案为例，也许可以这样做：

function translateKey(student, keyToChange, translation) {
    var newObject = Object.assign({}, student);
    // Do nothing if the names are the same
    if (keyToChange === translation) {
        return newObject;
    }
    // Check for the old property name to avoid a ReferenceError in strict mode.
    if (newObject.hasOwnProperty(keyToChange)) {
        newObject[translation] = newObject[keyToChange];
        delete newObject[keyToChange];
    }
    return newObject;
}

如果这是您必须为课程做的练习，请阅读我链接的其他问题以查看其他方式并尝试正确理解解决方案，例如为什么检查hasOwnProperty 很重要或为什么我们使用===而不是简单的==。

Answer 2

if (old_key !== new_key) {
  Object.defineProperty(o, new_key,
    Object.getOwnPropertyDescriptor(o, old_key));
  delete o[old_key];
}

从这个答案：

https://stackoverflow.com/a/14592469/9504351