What are the differences between for, while, and do-while loops in JavaScript?

What are the differences between for, while, and do-while loops in JavaScript?

In JavaScript, a 'for' loop is used when the number of iterations is known. A 'while' loop continues until a condition is false, and a 'do-while' loop executes at least once before checking the condition.

Can you give me an example of each loop?

Sure! Here's a 'for' loop:

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

A 'while' loop:

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

And a 'do-while' loop:

let j = 0;
do {
    console.log(j);
    j++;
} while (j < 5);

What are the advantages of using one loop type over another?

The 'for' loop is great for a known number of iterations, while the 'while' loop is more flexible for conditions that may change. The 'do-while' loop ensures the code runs at least once, which is useful in certain scenarios.

Are there performance differences between these loops?

Generally, the performance differences are negligible for most use cases. However, in very large iterations, the choice of loop can affect readability and maintainability, which are often more important than raw performance.