Are you struggling to figure out how to add a key to a const object in JavaScript? Don't worry, I've got you covered! Here are a few simple and effective methods to achieve this.
Method 1: Using Object.assign()
You can use the Object.assign() method to add a key to a const object. This method creates a new object by copying the values of the original object and then adds the specified key-value pair to it. Here's an example:
```js
const originalObject = { key1: 'value1' };
const newObject = Object.assign({}, originalObject, { key2: 'value2' });
console.log(newObject); // { key1: 'value1', key2: 'value2' }
```
Method 2: Using the Spread Operator (...)
Another way to add a key to a const object is by using the spread operator (...) to create a copy of the original object and then adding the new key-value pair. Here's an example:
```js
const originalObject = { key1: 'value1' };
const newObject = { ...originalObject, key2: 'value2' };
console.log(newObject); // { key1: 'value1', key2: 'value2' }
```
It's important to note that although these methods allow you to add keys to a const object, the original object remains unchanged. In other words, the const keyword prevents reassignment of the object itself, but it does not prevent modifying the object's properties.
By using these simple and effective methods, you can easily add a key to a const object in JavaScript without the need to redefine the object. Keeping your code clean and concise. So next time you find yourself in need of adding a key to a const object, remember these methods and tackle the task with confidence!