Session 3: Characteristics of Objects and JSON

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What is the main characteristic of objects in object-oriented programming?

They are ordered collections of data
They only interact through message passing
They inherit from other objects dynamically
They have individual attributes and responsibilities (correct)

What is the advantage of using object-oriented programming?

Complicated syntax
Spaghetti code
Limited reusability
Encapsulation/information hiding (correct)

What is the weakness of using object-oriented programming?

Can be overkill for limited applications (correct)
Simplicity in design
Efficient memory usage
Increased modularity

What are the attributes of objects in JavaScript?

Object prototype, class, extensible flag (B) Signup and view all the answers

Which category do arrays and functions belong to in JavaScript?

Native objects (A) Signup and view all the answers

What is the purpose of an extensible flag for objects?

Specifies whether new properties can be added (A) Signup and view all the answers

What is JSON primarily used for?

Data interchange (D) Signup and view all the answers

What is the main benefit of defining your own objects in JavaScript?

To represent data more accurately and efficiently (C) Signup and view all the answers

What does 'message passing' refer to in object-oriented programming?

The way objects communicate by sending and receiving data (C) Signup and view all the answers

What does the object prototype reference in JavaScript?

The object properties inherited from its parent object (C) Signup and view all the answers

What is the purpose of property attributes in JavaScript?

To control the behavior of the property like writeability, enumerability, and configurability (D) Signup and view all the answers

In JavaScript, what is the purpose of dot notation when accessing object properties?

To access existing object properties (C) Signup and view all the answers

What is the purpose of the 'hasOwnProperty' method in JavaScript when looping through object properties?

To check if a specific property exists on the object (A) Signup and view all the answers

What is unique about JavaScript strings compared to other programming languages?

They have a property called length (D) Signup and view all the answers

What does the 'modifier' in regular expressions specify?

Various matching behaviors such as case-insensitive or multi-line matching (B) Signup and view all the answers

What is the purpose of predefined character classes in regular expressions?

To represent special characters like space or digits (C) Signup and view all the answers

What is the purpose of using the 'new' keyword when creating JavaScript strings?

To convert existing strings into objects (B) Signup and view all the answers

What is the purpose of the 'loop' in JavaScript arrays?

To perform a set of instructions repeatedly for each element in the array (C) Signup and view all the answers

10

This one is correct. (A) Signup and view all the answers