What Is a Loop?
🧪 Concept:
A loop is a way to repeat code automatically. Instead of writing the same line over and over, you tell the computer to repeat it for you.
Here’s a basic for loop:
for (let i = 0; i < 5; i++) {
console.log("Hi!");
}
This says:
▪ Start at 0
▪ Keep going while i is less than 5
▪ Add 1 each time
▪ Say “Hi!” each time through
🧰 Why It Matters:
Loops help you work through lists, repeat actions, and save yourself from writing the same thing again and again.
🎉 Quick Challenge:
Write a loop that counts from 1 to 3 and logs the number:
for (let i = 1; i <= 3; i++) {
console.log(i);
}
🧠 Fun Analogy:
A loop is like a record player on repeat. Once it starts, it keeps playing until you tell it to stop.
📚 Further Reading:
▪ MDN Docs – Looping code
▪ W3Schools – JavaScript Loops
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