javascript-lodashHow can I use Lodash to change the key name of an object in JavaScript?

Using Lodash, you can easily change the key name of an object in JavaScript. Lodash provides a _.mapKeys() function that can be used to map the keys of an object to a new set of keys.

For example, given the following object:

const obj = {
    name: 'John',
    age: 25
};

You can use _.mapKeys() to change the key names to firstName and yearsOld like this:

const newObj = _.mapKeys(obj, (value, key) => {
    return key === 'name' ? 'firstName' : 'yearsOld';
});

console.log(newObj);
// Output: { firstName: 'John', yearsOld: 25 }

The _.mapKeys() function takes two arguments: the object to map and a function that determines the mapping of each key. In the example above, the function returns firstName if the key is name, and yearsOld otherwise.

Code explanation

• const obj = { name: 'John', age: 25 };: This creates an object with two keys, name and age.
• const newObj = _.mapKeys(obj, (value, key) => { ... });: This uses Lodash's _.mapKeys() function to map the keys of the object to a new set of keys.
• return key === 'name' ? 'firstName' : 'yearsOld';: This is the function that determines the mapping of each key. It returns firstName if the key is name, and yearsOld otherwise.

Here are some relevant links if you need more information:

• Lodash Documentation: _.mapKeys()
• MDN: Object.keys()

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