JavaScript Quiz

What type of programming language is JavaScript?

• Interpreted

• Static

• Assembly

• Compiled

Which of the following is a JavaScript framework?

• Django

• Ruby on Rails

• Flask

• React

What does the 'this' keyword refer to in JavaScript?

• The current function

• The parent object

• The global object

• The calling object

Which method is used to parse JSON data in JavaScript?

• JSON.parse()

• JSON.stringify()

• JSON.load()

• JSON.decode()

What is the purpose of the 'let' keyword in JavaScript?

• To declare a function

• To declare a block-scoped variable

• To declare a constant variable

• To declare a global variable

Which of the following is NOT a JavaScript data type?

• Number

• Character

• Boolean

• String

What is the output of console.log(typeof null)?

• string

• null

• object

• undefined

Which of the following is a method to handle asynchronous operations in JavaScript?

• Callback

• Promise

• All of the above

• Async/Await

What does the 'map' method do in JavaScript?

• Sorts an array

• Reduces an array to a single value

• Transforms each element in an array

• Filters an array

Which operator is used to compare both value and type in JavaScript?

• !==

• ==

• !=

• ===