In this tutorial, you will learn about JavaScript objects and how to manipulate object properties effectively.

In JavaScript, an object is a collection of properties, defined as a key-value pair. Each property has a key and a value. The property key can be a string and the property value can be any valid value.

To create an object, you use the object literal syntax. For example, the following snippet creates an empty object:

let empty = {};

To create an object with properties, you use the key : value syntax. For example, the following snippet creates a person object:

let person = {
    firstName: 'John',
    lastName: 'Doe'
};

The person object has two properties firstName and lastName with the corresponding values 'John' and 'Doe'.

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