What will be the output of the following JavaScript code? Code: console.log('Hello' + 1 + 2);
A). A) Hello12
B). B) Hello3
C). C) Hello
D). D) TypeError: cannot convert number to string
What will be the output of the following JavaScript code? Code: let x = 30; if (x % 2 === 0) { console.log('Even'); } else { console.log('Odd'); }
A). A) Even
B). B) Odd
C). C) 30
D). D) None of the above
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 does the following JavaScript code snippet do? Code: let x = 'Hello'; console.log(x.toUpperCase());
A). A) Converts x to lowercase
B). B) Reverses the characters in x
C). C) Converts x to uppercase
D). D) Adds spaces to x
What will be the output of the following JavaScript code? Code: let x = 15; if (x % 2 === 0) { console.log('Even'); } else { console.log('Odd'); }
A). A) Even
B). B) Odd
C). C) 15
D). D) None of the above
What does the following JavaScript code snippet do? Code: let numbers = [1, 2, 3, 4, 5]; let sum = numbers.reduce((total, num) => total + num, 0); console.log(sum);
A). A) Finds the maximum number in numbers
B). B) Calculates the average of numbers in numbers
C). C) Sums all numbers in numbers
D). D) Checks if all numbers in numbers are even
What does the following JavaScript code snippet do? Code: let names = ['Alice', 'Bob', 'Charlie']; let message = 'Names: ' + names.join(', '); console.log(message);
A). A) Adds names to an array
B). B) Joins names from an array into a single string
C). C) Splits names into an array
D). D) Reverses the order of names in an array
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
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 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