Q
What will be the output of the following JavaScript code? Code: let i = 0; for (; i < 3; i++) { console.log(i); }

Answer & Solution

Answer: Option A
Solution:
The code snippet uses a for loop to iterate from 0 to 2 (inclusive) and prints the value of i to the console in each iteration. The loop is initialized without declaring i in the initialization part of the loop. Therefore, i starts with its previously declared value, which is 0 in this case. The output will be: 0 1 2
Related Questions on Average

What will be the output of the following JavaScript code? Code: let nums = [1, 2, 3, 4, 5]; for (let n of nums) { if (n % 2 === 0) { console.log(n); } }

A). 1 3 5

B). 2 4 6

C). 1 2 3 4 5

D). 2 4

What will be the output of the following JavaScript code? Code: for (let i = 0; i <= 3; i++) { console.log(i); }

A). 0 1 2 3

B). 0 1 2

C). 1 2 3

D). 1 2 3 4

What does the following JavaScript code snippet do? Code: let num = 5; while (num > 0) { console.log(num); num--; }

A). Declares a variable and assigns a value to it

B). Executes a block of code repeatedly until a condition becomes false

C). Calculates the sum of numbers from 1 to 5

D). Checks if a number is positive or negative

What is the purpose of the following JavaScript statement? return result;

A). Exits the current loop or switch statement

B). Skips the current iteration in a loop

C). Exits the current function and returns a value

D). Continues to the next iteration in a loop

What is the purpose of the following JavaScript statement? continue;

A). Exits the current loop or switch statement

B). Skips the current iteration in a loop

C). Assigns a value to a variable

D). Continues to the next iteration in a loop

What will be the output of the following JavaScript code? Code: let i = 3; do { console.log(i); i--; } while (i > 0);

A). 3 2 1

B). 2 1 0

C). 3 2 1 0

D). 1 2 3

What is the purpose of the following JavaScript statement? let result = x > 0 ? 'Positive' : 'Non-positive';

A). Assigns the value 'Positive' to result if x is greater than 0, otherwise assigns 'Non-positive'

B). Checks if x is greater than 0

C). Prints 'Positive' if x is greater than 0, otherwise prints 'Non-positive'

D). None of the above

What is the purpose of the following JavaScript statement? break;

A). Assigns a value to a variable

B). Exits the current loop or switch statement

C). Skips the current iteration in a loop

D). Continues to the next iteration in a loop

Which of the following JavaScript statements is used to execute a block of code repeatedly until a specified condition becomes false?

A). Function declaration statement

B). Conditional statement (if statement)

C). Assignment statement

D). Looping statement (do-while loop)

Which of the following JavaScript statements is used to execute different code based on a specified condition?

A). Function declaration statement

B). Assignment statement

C). Conditional statement (if statement)

D). Looping statement (for loop)