What does object mean in js

What is a JavaScript object?

In JavaScript, an object is a special reference type that contains key-value pairs. Objects allow us to store and organize data in a structured way.

Characteristics of objects:

• Key-value pairs: Objects contain key-value pairs, where the key is a unique identifier, and The value can be any JavaScript value (including another object).
• Reference type: Object is a reference type, which means that when we copy or pass an object, we actually copy or pass a reference to the object.
• Extensibility: Objects can dynamically add or delete attributes, allowing us to process data flexibly.
• Indexable: The properties of an object can be accessed using square bracket syntax, such as object["property"].

Creating objects:

There are two main ways to create objects:

• Object literal : Use curly braces {} to create objects, for example:

  <code class="javascript">const person = {
  name: "John Doe",
  age: 30,
  occupation: "Software Engineer"
  };</code>

• Constructor: Use new Keywords and constructors to create objects, for example:

  <code class="javascript">function Person(name, age, occupation) {
  this.name = name;
  this.age = age;
  this.occupation = occupation;
  }
  const person = new Person("John Doe", 30, "Software Engineer");</code>

Use objects:

We can use dot syntax or square bracket syntax to Access the properties of the object, for example:

• Dot syntax: object.property
• Square bracket syntax: object["property"]

We can also use the following methods to handle objects:

• Add properties: object.newProperty = value
• Delete property: delete object.property
• Get property value: object.property or object["property"]
• Loop through objects: for (const property in object)

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