Q
What does the following JavaScript code snippet do? Code: let x = 'Hello'; let y = x.length; console.log(y);

Answer & Solution

Answer: Option A
Solution:
The code snippet calculates and stores the length of the string 'Hello' (which is 5) in the variable y. Therefore, the output will be 5.
Related Questions on Average

What does the following JavaScript code snippet do? Code: let numbers = [1, 2, 3, 4, 5]; let avg = numbers.reduce((total, num) => total + num, 0) / numbers.length; console.log(avg);

A). A) Calculates the sum of numbers in numbers

B). B) Finds the maximum number in numbers

C). C) Calculates the average of numbers in numbers

D). D) Checks if all numbers in numbers are even

What does the following JavaScript code snippet do? Code: let numbers = [1, 2, 3, 4, 5]; let min = Math.min(...numbers); console.log(min);

A). A) Calculates the sum of numbers in numbers

B). B) Finds the minimum number in numbers

C). C) Calculates the product of numbers in numbers

D). D) Checks if all numbers in numbers are even

What does the following JavaScript code snippet do? Code: let x = 5; let y = x++; console.log(x, y);

A). A) Increments x and assigns to y

B). B) Decrements x and assigns to y

C). C) Assigns x to y and then increments x

D). D) Assigns x to y and then decrements x

What will be the output of the following JavaScript code? Code: let x = 35; if (x % 2 === 0) { console.log('Even'); } else { console.log('Odd'); }

A). A) Even

B). B) Odd

C). C) 35

D). D) None of the above

What does the following JavaScript code snippet do? Code: let a = 10; let b = 20; let temp = a; a = b; b = temp; console.log(a, b);

A). A) Swaps the values of a and b

B). B) Adds a and b

C). C) Checks if a is equal to b

D). D) Multiplies a and b

What will be the output of the following JavaScript code? Code: console.log('20' - 10);

A). A) 10

B). B) 30

C). C) '2010'

D). D) NaN

What will be the output of the following JavaScript code? Code: console.log(typeof null);

A). A) Object

B). B) Null

C). C) Undefined

D). D) String

What will be the output of the following JavaScript code? Code: let x = 45; if (x % 2 === 0) { console.log('Even'); } else { console.log('Odd'); }

A). A) Even

B). B) Odd

C). C) 45

D). D) None of the above

What will be the output of the following JavaScript code? Code: let x = 40; if (x % 2 === 0) { console.log('Even'); } else { console.log('Odd'); }

A). A) Even

B). B) Odd

C). C) 40

D). D) None of the above

What will be the output of the following JavaScript code? Code: let x = 8; if (x % 2 === 0) { console.log('Even'); } else { console.log('Odd'); }

A). A) Even

B). B) Odd

C). C) 8

D). D) None of the above