What happens if you declare multiple variables in one statement without initializing them?
A). It throws a syntax error
B). It initializes all variables to 0
C). It initializes all variables to null
D). It initializes all variables to undefined
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
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
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
Consider the code: let a, b, c;. What will console.log(a); output?
A). a
B). undefined
C). null
D). 0
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 syntax for declaring multiple variables in one statement using the let keyword?
A). let var1, var2, var3;
B). let var1 = value, var2 = value, var3 = value;
C). let var1 = value; let var2 = value; let var3 = value;
D). let (var1, var2, var3);
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
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