Q
What happens if you declare multiple variables in one statement without initializing them?

Answer & Solution

Answer: Option D
Solution:
When variables are declared without initialization, they are automatically initialized to undefined.
Related Questions on Average

Which of the following statements is true regarding variable naming in one statement?

A). Variable names can contain spaces

B). Variable names must start with a digit

C). Variable names can start with an underscore

D). Variable names must be unique within the statement

Which of the following is a benefit of declaring multiple variables in one statement?

A). Improved code organization

B). Reduced code execution time

C). Increased variable scope

D). Limited variable reusability

What is the result of the expression let x = 10, y = x++;?

A). x is 10, y is 11

B). x is 11, y is 10

C). x is 10, y is 10

D). x is 11, y is 11

How does JavaScript interpret the statement let a, b = 5, c;?

A). Declares a, initializes b to 5, declares c

B). Declares and initializes a to 0, initializes b to 5, declares c

C). Declares a, initializes b to undefined, declares c

D). Declares and initializes a, b, and c to 0

In JavaScript, which of the following data types can be declared using let in one statement?

A). Number

B). String

C). Object

D). All of the above

Consider the code: let a, b, c;. What will console.log(a); output?

A). a

B). undefined

C). null

D). 0

Which of the following is a disadvantage of declaring multiple variables in one statement?

A). Increased code readability

B). Difficulty in tracking variable values

C). Limited variable scope

D). Reduced memory usage

Which keyword is commonly used to declare multiple variables in one statement in JavaScript?

A). multi

B). var

C). multi

D). let

What does the term 'One Statement, Many Variables' refer to in JavaScript?

A). Declaring multiple variables with different data types in one statement

B). Initializing multiple variables with the same value in one statement

C). Declaring multiple variables with the same data type in one statement

D). Assigning multiple values to one variable in one statement

What is the behavior of the code let a, b = 5, c = b;?

A). b and c are initialized to 5, a is initialized to undefined

B). a, b, and c are initialized to 5

C). b is initialized to 5, c is initialized to undefined, a is initialized to 5

D). a and c are initialized to 5, b is initialized to undefined