Answer & Solution
Answer: Option A
Solution:
Variables declared using the let keyword have block scope, meaning they are limited to the block in which they are declared.
Q
What is the scope of a variable declared using the let keyword in JavaScript?
Related Questions on Average
Which of the following is NOT a valid variable name in JavaScript?
A). _myVariable
B). 2ndVariable
C). $myVariable
D). my-Variable
What is the keyword used to declare variables in JavaScript?
A). let
B). variable
C). var
D). const
What will be the value of x after the following code executes: let x = '5' + 5;?
A). '55'
B). 10
C). 5
D). '10'
Which symbol is used for string concatenation in JavaScript?
A). +
B). -
C). *
D). /
What is the value of x after the following code executes: let x = 5; x *= 2; x /= 3;?
A). 04-Oct
B). 6666666666667
C). 5
D). undefined
Which method is used to convert a string to a number in JavaScript?
A). toString()
B). parseInt()
C). parseFloat()
D). toNumber()
Which statement correctly assigns the value true to a boolean variable isLogged in JavaScript?
A). let isLogged = 'true';
B). let isLogged = true;
C). let isLogged = 1;
D). let isLogged = 0;
What will be the output of the following code: console.log('Hello ' + 'World');?
A). Hello World
B). Hello + World
C). Hello +World
D). HelloWorld
What is the purpose of the NaN (Not a Number) value in JavaScript?
A). To represent a number that is not a valid JavaScript number
B). To represent a zero value
C). To represent an infinite value
D). To represent an empty string
Which keyword is used to declare a constant variable in JavaScript?
A). const
B). let
C). var
D). constant