While Loops in JavaScript (OCR A-Level Computer Science): Revision Notes

While Loops in JavaScript

Overview

While loops execute a block of code repeatedly as long as a specified condition is true. They are useful for conditions-based repetition.

Key Concepts

• Syntax: while (condition) { code }

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

Common Mistakes

• Infinite loops: Ensure the condition will eventually become false.