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Object-Oriented Programming Review: Characteristics, Custom Objects, JSON, and Ajax

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Object-Oriented Programming Review: Characteristics, Custom Objects, JSON, and Ajax

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Questions and Answers

Which notation is used to access properties of an object?

Arrow notation
Bracket notation
Dot notation (correct)
Function notation

What is the preferred way to declare strings in JavaScript?

Single quotes (correct)
Template literals
Double quotes
String objects

What are regular expressions used for in JavaScript?

Manipulating arrays
Defining functions
Accessing object properties
Matching patterns in strings (correct)

What is the method to check if an object has its own property?

hasOwnProperty() (B) Signup and view all the answers

How are objects declared in JavaScript?

Curly braces {} (D) Signup and view all the answers

What property is used to access the length of a string in JavaScript?

length (C) Signup and view all the answers

What is the primary advantage of object-oriented programming?

Encapsulation, intuition, and reuse (B) Signup and view all the answers

What is a characteristic of objects in JavaScript?

They can contain methods that operate on the object's data (B) Signup and view all the answers

Which type of objects are defined by JavaScript, such as Array, Function, Date?

Native objects (D) Signup and view all the answers

What do object prototypes allow in JavaScript?

Objects to inherit properties and methods from a prototype object (D) Signup and view all the answers

Which format is used for data interchange between systems?

JSON (B) Signup and view all the answers

What is the primary purpose of Ajax in JavaScript?

Asynchronous data loading without page refresh (D) Signup and view all the answers

What do object literals define in JavaScript?

Inline object definitions (C) Signup and view all the answers

What are the characteristics of object properties in JavaScript?

'Writable', 'enumerable', 'configurable' attributes control property behavior (C) Signup and view all the answers

'Encapsulation' in object-oriented programming refers to:

Hiding implementation details and restricting access to the object's data (C) Signup and view all the answers