Which of the following is a valid way to define a constant object in JavaScript?

Which statement best describes the behavior of a constant object in JavaScript?

A). A. The object and its properties cannot be changed

B). B. The object reference cannot be reassigned

C). C. All properties are immutable

D). D. The object cannot be modified after declaration

How can you ensure that a constant object remains unchanged in JavaScript?

A). A. Use Object.preventExtensions()

B). B. Use Object.freeze() to freeze the object

C). C. Use const for each property

D). D. All of the above

What happens if you try to delete a property from a constant object in JavaScript?

A). A. The property is deleted successfully

B). B. A TypeError is thrown

C). C. A SyntaxError is thrown

D). D. Nothing happens

What is the data type of a constant object in JavaScript?

A). A. Object

B). B. Array

C). C. Function

D). D. String

What happens if you try to modify a property of a frozen object in JavaScript using Object.freeze()?

A). A. The property is modified successfully

B). B. A TypeError is thrown

C). C. The property is deleted

D). D. The object becomes mutable

Which of the following will result in an error when using a constant object in JavaScript?

A). A. Modifying an existing property

B). B. Adding a new property

C). C. Reassigning the object reference

D). D. None, all operations are valid with constant objects

Which of the following will cause an error when used with a constant object in JavaScript?

A). A. Modifying a property using bracket notation

B). B. Adding a property using dot notation

C). C. Deleting a property

D). D. Reassigning the object reference

How can you check if an object is frozen in JavaScript?

A). A. Using the frozen property

B). B. Using the isFrozen() method

C). C. Using the Object.isFrozen() method

D). D. All of the above

Which statement about constant objects in JavaScript is correct?

A). A. Constant objects can have their properties reassigned

B). B. Constant objects cannot have properties added or removed

C). C. Constant objects are only applicable to primitive values

D). D. Constant objects are mutable

Which statement is true about constant objects in JavaScript?

A). A. The properties of a constant object cannot be changed

B). B. Constant objects are frozen and immutable

C). C. Constant objects cannot have properties added or deleted

D). D. The object reference can be reassigned