How to useObject destructuring and rest syntax in Typescript
In this approach, we leverage object destructuring along with the rest syntax to create a new object that excludes the specified key. We use object destructuring to extract all properties of the original object except the one we want to remove, and then use the rest syntax to collect these properties into a new object.
Example: In this example, we’ll use object destructuring and rest syntax to remove the key “year” from the original object.
interface MyObject {
[key: string]: any;
}
const originalObject: MyObject = { name: 'GFG', year: 2024, city: 'Noida' };
console.log("Original Object:");
console.log(originalObject);
const keyToRemove: string = 'year';
// Using object destructuring and rest syntax to remove the specified key
const { [keyToRemove]: removedKey, ...newObject } = originalObject;
console.log("After key removal:");
console.log(newObject);
Output
Original Object:
{ name: 'GFG', year: 2024, city: 'Noida' }
After key removal:
{ name: 'GFG', city: 'Noida' }
How to Remove a Key from TypeScript Object ?
In TypeScript, objects are mutable, which means you can modify them by adding, updating, or removing properties. Removing a key from an object involves either creating a new object without the specified key or using certain built-in methods to achieve the desired result.
Below are the approaches used to remove a key from TypeScript object:
Table of Content
- Approach 1: Using spread operator
- Approach 2: Using delete keyword
- Approach 3: Using Object.assign()
- Approach 4: Using Object destructuring and rest syntax
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