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4.7 Choosing A Loop

4.7 Choosing A Loop

Wow! There are a lot of loops in JavaScript. Which one do I use?

When it comes to choosing a loop, it all depends on the situation. So, the best way to know what kind of loop is needed takes practice.

General Guidelines

  • If you know the number of iterations you need to make, a for loop may be a good choice. Otherwise, a while loop may be better.
  • If you want to go through all properties of an object, use a for in loop.
  • If you want to go through everything in an iterable, use a for of loop.
  • If you want to run some piece of code once and you don't know the number of times the loop should be repeated, use a do while loop.

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