Answer & Solution
Answer: Option B
Solution:
Properties of objects declared with const can be changed, but the reference to the object cannot be reassigned.
Q
Which of the following statements about const and objects is true?
Related Questions on Average
What will be the output of the following code: let x = 10; { let x = 20; } console.log(x);?
A). 10
B). 20
C). undefined
D). ReferenceError
What is the output of the following code: let z = 3; z = 5; console.log(z);?
A). 3
B). 5
C). undefined
D). ReferenceError
What is the value of a const variable once it is assigned?
A). Can be changed later
B). Cannot be changed later
C). Depends on the data type
D). Undefined initially
Which keyword allows block-level scope in ES6?
A). var
B). let
C). function
D). var and function
Which keyword is used to declare a read-only named constant?
A). let
B). var
C). const
D). static
What will the following code output: { let y = 5; { let y = 10; console.log(y); } }?
A). 5
B). 10
C). undefined
D). ReferenceError
Can a const variable be declared without an initial value?
A). Yes
B). No
C). Only in strict mode
D). Only if it is an object
What is the scope of a variable declared with let?
A). Global
B). Function
C). Block
D). Object
Which keyword should be used for a variable that might be reassigned?
A). const
B). let
C). var
D). function
What will the following code output: { const a = 10; a = 20; }?
A). 10
B). 20
C). undefined
D). TypeError