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 you know how many times you want to iterate. A 'while' loop continues until a specified 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 quick example:

1. For loop:

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

2. While loop:

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

3. Do-while loop:

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

What are the advantages of using one loop over the others?

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

Are there any 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 more than performance.