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

For Loops in JavaScript

Overview

Loops are used to repeat a block of code a specific number of times, making them useful for tasks involving fixed repetitions.

Key Concepts

• Syntax: for(initialisation; condition; increment){ code }

for (let i = 0; i < 5; i++) {
  console.log("This is loop iteration " + i);
}

Common Mistakes

• Incorrect loop conditions: Ensure the condition allows the loop to exit.