Summary  
The chapter explains the array includes method, which returns a boolean indicating whether a specified element is present in the array.

General domain of usage  
Inventory management

The `includes` method can be used to quickly determine of a specific element exists in the array or not.

Following is the **general syntax** of the includes method:
```
arrayName.includes(element);
```

The `includes` method returns a boolean (`true` or `false`) value based on whether or not the element exists in the array.
- **Returns** `true` if the element is found;
- **Returns** `false` if the element is not found.

let itemsInStock = ["Laptop", "Phone", "Tablet", "Charger"];

console.log(itemsInStock.includes("Phone"));
console.log(itemsInStock.includes("Headphones"));

The `includes` method performs a **strict comparison** (`===`), meaning it checks for exact matches, including case sensitivity. For example, `itemsInStock.includes("phone")` would return `false` because `"phone"` (lowercase) is not the same as `"Phone"` (uppercase **"P"**).

Note

What will be the output of the following code?

Which of the following statements is true about the `includes` method?

Dive into the world of the most popular language for front-end development – JavaScript. JavaScript is a language built into almost every browser and can be used for a wide variety of tasks. Learn the basic functionality and prepare yourself for the challenges and more advanced programming techniques.

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The `includes` Method

1. What will be the output of the following code?

2. Which of the following statements is true about the `includes` method?

Awesome!

The `includes` Method

1. What will be the output of the following code?

2. Which of the following statements is true about the `includes` method?

The `includes` Method

1. What will be the output of the following code?

2. Which of the following statements is true about the includes method?

Awesome!

The `includes` Method

1. What will be the output of the following code?

2. Which of the following statements is true about the includes method?

2. Which of the following statements is true about the `includes` method?

2. Which of the following statements is true about the `includes` method?