JavaScript for Loop

The for loop is one of the most frequently used loops in JavaScript. It allows you to run a block of code a specific number of times. This makes it ideal for scenarios like iterating over arrays, generating numeric sequences, or automating repetitive tasks.

---

Syntax

Components:

• Initialization: Runs once before the loop begins. Often used to define a counter variable.
• Condition: Checked before every loop iteration. If false, the loop ends.
• Increment/Decrement: Updates the loop counter after each iteration.

---

Example 1: Basic for Loop

---

Example 2: Looping Through an Array

---

Example 3: Decrementing Loop

---

Example 4: Skipping Values Using continue

---

Example 5: Stopping Loop Using break

---

When to Use for Loop

• When you know the exact number of iterations needed.
• When working with array indices.
• When you need full control over the loop’s start, stop, and step values.

---

Key Takeaways

• The for loop is best for fixed-count iterations.
• It consists of initialization, condition, and increment expressions.
• continue skips the current iteration.
• break exits the loop entirely.
• Always ensure your loop condition will eventually become false to avoid infinite loops.