The **spread operator (`...`)** in JavaScript is a powerful feature that lets you expand arrays, objects, and iterables with ease. In this beginner-friendly tutorial, you'll learn exactly how to use the spread operator in different real-world scenarios—including array copying, merging, object cloning, function arguments, and more.

Whether you're new to JavaScript or brushing up on modern ES6+ syntax, mastering the spread operator will make your code cleaner, more concise, and easier to read.

What You’ll Learn:

* What is the spread operator and how it works
* Using the spread operator with arrays (copy, merge, pass as arguments)
* Using the spread operator with objects (clone, merge properties)
* Difference between spread and rest syntax
* Practical examples to apply in real projects
* Common mistakes to avoid when using `...`

Examples Covered:

```javascript
// Copying an array
const arr1 = [1, 2, 3];
const arr2 = [...arr1];

// Merging arrays
const merged = [...arr1, 4, 5];

// Cloning and merging objects
const obj1 = { a: 1 };
const obj2 = { ...obj1, b: 2 };

// Using spread in function calls
const nums = [3, 5, 7];
console.log(Math.max(...nums));
```

This tutorial is perfect for front-end developers, full-stack devs, and anyone learning modern JavaScript for React, Node.js, or web development in general.

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