https://github.com/yosephdev/advanced-javascript-methods-demo

https://github.com/yosephdev/advanced-javascript-methods-demo

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• Host: GitHub
• URL: https://github.com/yosephdev/advanced-javascript-methods-demo
• Owner: yosephdev
• Created: 2024-03-20T05:31:12.000Z (8 months ago)
• Default Branch: main
• Last Pushed: 2024-03-20T10:01:51.000Z (8 months ago)
• Last Synced: 2024-03-21T07:27:12.217Z (8 months ago)
• Language: JavaScript
• Homepage:
• Size: 6.84 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Advanced JavaScript Methods Demo

Welcome to the Advanced JavaScript Methods Demo repository!

In this repository, you'll find examples and explanations of three essential methods in JavaScript: `map()`, `filter()`, and `reduce()`. These methods are frequently used by advanced JavaScript developers for various data manipulation tasks.

## Table of Contents

1. [Introduction](#introduction)

2. [Map Method](#map-method)

3. [Filter Method](#filter-method)

4. [Reduce Method](#reduce-method)

5. [Running the Examples](#running-the-examples)

## Introduction

JavaScript provides powerful array methods like `map()`, `filter()`, and `reduce()` that allow developers to perform complex operations on arrays efficiently. Understanding how to use these methods is essential for writing clean, concise, and maintainable code.

## Map Method

The `map()` method creates a new array by applying a function to each element of the original array. It's commonly used for transforming array elements.

Example:

```javascript

const numbers = [1, 2, 3, 4, 5];

const doubledNumbers = numbers.map(num => num * 2);

console.log(doubledNumbers); // Output: [2, 4, 6, 8, 10]

```

## Filter Method

The filter() method creates a new array with all elements that pass the test implemented by the provided function. It's useful for selecting elements based on specific criteria.

Example:

```javascript

const numbers = [1, 2, 3, 4, 5];

const evenNumbers = numbers.filter(num => num % 2 === 0);

console.log(evenNumbers); // Output: [2, 4]

```

## Reduce Method

The reduce() method executes a reducer function on each element of the array, resulting in a single output value. It's often used for aggregating data or performing calculations on arrays.

Example:

```javascript

const numbers = [1, 2, 3, 4, 5];

const sum = numbers.reduce((accumulator, currentValue) => accumulator + currentValue, 0);

console.log(sum); // Output: 15

```

## Running the Examples

To run the examples provided in this repository, follow these steps:

1. Clone this repository to your local machine using Git.

2. Open a terminal or command prompt and navigate to the cloned directory.

3. Run the example scripts using Node.js.