What is the primary difference between while and do-while loops in JavaScript?
- The while loop always executes the code block at least once
- The do-while loop is more efficient
- The while loop is not suitable for iterating over arrays
- The do-while loop doesn't have a condition
The primary difference is that in a while loop, the condition is checked before executing the code block. If the condition is initially false, the code block may never run. In contrast, the do-while loop guarantees that the code block is executed at least once because it checks the condition after executing the block. This makes do-while useful when you want the code to run once before checking the condition.
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