ISPFL7 - BSIS4A BSIS4A - Quiz 3

What is JavaScript mainly used for?

• Server-side
• Client-side scripting
• Database management
• File handling

Answer explanation

JavaScript runs in the user's browser, known as client-side scripting.

Which of the following is true about JavaScript?

• It is only for animations
• It can only be used with HTML
• It's a versatile language
• Runs only on server

Answer explanation

JavaScript is versatile for dynamic tasks like validation and content updates.

What type of language is JavaScript?

• Compiled
• Interpreted
• Assembly
• Machine

Answer explanation

JavaScript is interpreted, meaning it runs directly in the browser.

JavaScript is:

• Case-sensitive
• Case-insensitive
• Depends on environment
• None of the above

Answer explanation

JavaScript distinguishes between uppercase and lowercase characters.

Which keyword is used to declare a variable in JavaScript?

• let
• var
• const
• All of the above

Answer explanation

All three are used to declare variables, with different scopes.

What does DOM stand for?

• Document Object Model
• Data Object Model
• Dynamic Object Model
• Document Online Model

Answer explanation

DOM stands for Document Object Model, which represents page structure.

Which of the following is used to check if two values are not equal in JS?

• ==
• !=
• &&
• =

Answer explanation

The correct answer is !=, which is known as the "not equal" operator.

What is the purpose of using the prompt() function in JavaScript?

• Display a message
• Ask for user input
• Confirm an action
• Validate form data

Answer explanation

prompt() asks the user for input and returns the entered value.

Which method is used to create an alert box in JavaScript?

• alert()
• confirm()
• prompt()
• showAlert()

Answer explanation

The alert() method displays a message with an OK button.

Which operator is used to increment a number by 1 in JavaScript?

• +
• *
• ++
• +=

Answer explanation

The ++ operator increments a number by 1.