JavaScript While Loop Flashcard

Front

What is the primary purpose of a while loop in JavaScript?

Back

To execute a block of code as long as a specified condition is true

Front

What will happen if you forget to increase the variable used in the condition of a while loop?

Back

The loop will never end and may crash the browser

Front

How does a do while loop differ from a while loop?

Back

It executes the code block before checking the condition

Front

In a do while loop, when is the condition checked?

Back

After the code block is executed

Front

Which of the following is true about the for loop compared to the while loop? A for loop can only be used with numbers, A for loop is always faster than a while loop, A for loop includes initialization, condition, and increment in one line, A for loop cannot be used to iterate over arrays

Back

A for loop includes initialization, condition, and increment in one line

Front

What is the correct syntax for a while loop?

Back

while (condition) { // code block }

Front

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

Back

HelloHelloHello

Front

Which loop will always execute the code block at least once?

Back

do while loop

Front

What is the result of the following code?
const cars = ['BMW', 'Volvo', 'Saab'];
let i = 0;
let text = '';
while (cars[i]) {
text += cars[i];
i++;
}
console.log(text);

Back

BMWVolvoSaab

Front

What is a potential risk of using a while loop without proper condition handling?

Back

The loop may execute indefinitely.