Property Assignment (assign and delete)

1. Object.assign()

The Object.assign() method allows us to copy the values of all enumerable properties from one or more source objects to a target object. It takes in a target object as the first parameter and one or more source objects as subsequent parameters. The method then returns the modified target object.

1// Create a target object
2const target = {};
3
4// Create a source object
5const source = { name: 'John', age: 25 };
6
7// Assign properties from source object to target object
8Object.assign(target, source);
9
10console.log(target);
11// Output: { name: 'John', age: 25 }

2. Deleting Properties

To delete a property from an object, we can use the delete keyword followed by the object name and the property name.

1// Create an object
2const car = {
3  brand: 'Toyota',
4  model: 'Camry',
5  year: 2021
6};
7
8// Delete the 'year' property
9delete car.year;
10
11console.log(car);
12// Output: { brand: 'Toyota', model: 'Camry' }

It is important to note that deleting a property removes the property completely from the object, including its value and any associated methods.