Modern JavaScript from the Beginning - Second Edition - While and Do While Loops

The video tutorial covers various types of loops in programming, focusing on while and do while loops. It explains their syntax, use cases, and differences from for loops. The tutorial also demonstrates how to use while loops with arrays and how to nest them for more complex operations. Additionally, it highlights the unique characteristic of do while loops, which ensures the loop runs at least once, even if the condition is false.

Which of the following is NOT a type of loop discussed in the introduction?

• Do-while loop

• While loop

• For loop

• Switch loop

What is a key difference between a while loop and a for loop?

• For loops cannot iterate over arrays.

• For loops do not require an increment.

• While loops only have a condition in parentheses.

• While loops are used for known iterations.

When is it more appropriate to use a while loop over a for loop?

• When the number of iterations is known.

• When the number of iterations is unknown.

• When iterating over a fixed array.

• When performing a single operation.

What must be remembered to avoid an infinite loop when using a while loop?

• Use a continue statement.

• Initialize the variable inside the loop.

• Use a break statement.

• Increment the variable within the loop.

What is a nested while loop?

• A loop inside another loop.

• A loop that runs only once.

• A loop that does not require a condition.

• A loop that runs indefinitely.

What is a unique feature of a do-while loop?

• It requires no condition.

• It runs at least once even if the condition is false.

• It cannot be nested.

• It never runs if the condition is false.

In what scenario would you choose a do-while loop over a while loop?

• When you want to avoid using a condition.

• When you want the loop to run only if the condition is true.

• When you want the loop to run at least once regardless of the condition.

• When you want to iterate over a fixed number of times.