Kuizi 14 - Web

What is the basic syntax of a for loop in JavaScript?

• for (initialization; condition) { // code to be executed }

• for (initialization; increment) { // code to be executed }

• for (condition; initialization; increment) { // code }

• for (initialization; condition; increment) { // code to be executed }

How do you declare a while loop in JavaScript?

• do { // code to be executed } while (condition)

• while { condition; // code to be executed }

• for (condition) { // code to be executed }

• while (condition) { // code to be executed }

What is the main difference between a while loop and a do-while loop?

• Both loops execute the same number of times regardless of the condition.

• A while loop is used for iterating over arrays, while a do-while loop is used for conditional statements.

• The main difference is that a while loop may not execute at all if the condition is false, while a do-while loop always executes at least once.

• A while loop always executes at least once, while a do-while loop may not execute at all.

Can you provide an example of a nested loop in JavaScript?

• for (let i = 0; i < 3; i++) { for (let j = 0; j < 2; j++) { console.log(i, j); }}

• for (let j = 0; j < 3; j++) { for (let i = 0; i < 2; i++) { console.log(j); }}

• for (let i = 0; i < 2; i++) { for (let j = 0; j < 3; j++) { console.log(i + j); }}

• for (let i = 0; i < 5; i++) { console.log(i); }

What keyword is used to exit a loop prematurely?

• continue

• exit

• return

• break

How does the for loop iterate through an array?

• The for loop randomly selects elements from the array.

• The for loop only accesses the first element of the array.

• The for loop iterates through the array in reverse order.

• The for loop accesses each element of the array using an index that increments from 0 to the length of the array minus one.

What will be the output of the following code: for(let i = 0; i < 5; i++) { console.log(i); }?

• -1

• 0 1 2 3 4

• 5

• 10

What is the purpose of the continue statement in loops?

• To skip the current iteration of a loop and continue with the next one.

• To repeat the current iteration of a loop.

• To pause the loop for a specified time.

• To end the loop immediately and exit.

How do you create an infinite loop using a while statement?

• while (false) {}

• while (x < 10) {}

• while (true) {}

• while (1) {}

What is the output of the following code: let i = 0; do { console.log(i); i++; } while(i < 3);?

• 3

• -1

• 1.5

• 0 1 2