14 Questions
Which notation is used to access properties of an object in JavaScript?
Dot notation
What is the preferred way to declare strings in JavaScript for better performance?
Using string literals
How can you loop through the properties of an object in JavaScript?
Using a for loop
What does RegEx stand for in JavaScript?
Regular Expression
How are regular expressions used in JavaScript?
To match patterns in strings
What method is used to check if an object has its own property in JavaScript?
hasOwnProperty()
What are the advantages of object-oriented programming?
Encapsulation and reusability
What is a characteristic of objects in JavaScript?
Unordered collection of data with keys
What are the types of JavaScript objects?
Native, host, user-defined
How are object properties accessed or changed in JavaScript?
Dot or bracket notation
What is the purpose of Ajax in web development?
Asynchronous data loading without page refresh
What does object literal syntax use to define objects inline?
{key: value}
What are the attributes that control object properties in JavaScript?
Writable, enumerable, configurable
What type of inheritance allows objects to share functionality in JavaScript?
Prototypal inheritance
Study Notes
Accessing Properties in JavaScript
- The dot notation or bracket notation is used to access properties of an object in JavaScript.
Declaring Strings in JavaScript
- The preferred way to declare strings in JavaScript for better performance is by using single quotes.
Looping through Object Properties
- The
for...inloop is used to loop through the properties of an object in JavaScript.
Regular Expressions in JavaScript
- RegEx stands for Regular Expressions in JavaScript.
- Regular expressions are used in JavaScript for pattern matching, string manipulation, and validation.
Checking Object Properties
- The
hasOwnProperty()method is used to check if an object has its own property in JavaScript.
Object-Oriented Programming Advantages
- The advantages of object-oriented programming include modularity, reusability, and ease of maintenance.
Objects in JavaScript
- A characteristic of objects in JavaScript is that they are mutable and can be modified after creation.
Types of JavaScript Objects
- The types of JavaScript objects include Native objects, Host objects, and User-defined objects.
Accessing Object Properties
- Object properties can be accessed or changed in JavaScript using the dot notation or bracket notation.
Ajax in Web Development
- The purpose of Ajax in web development is to allow for asynchronous updates to a web page without requiring a full page reload.
Object Literal Syntax
- Object literal syntax uses the
{}notation to define objects inline.
Object Property Attributes
- The attributes that control object properties in JavaScript are
enumerable,configurable, andwritable.
Inheritance in JavaScript
- Prototypal inheritance allows objects to share functionality in JavaScript.
This quiz covers topics related to object-oriented programming in JavaScript, including characteristics of objects, defining custom objects, JSON, and Ajax. It also addresses using objects to represent data within JavaScript programs and interacting with objects through message passing. The quiz is designed to test your understanding of these concepts.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
