JavaScript - Performance Tips - Quick Start Example

Getting Started with JavaScript

Welcome to your first JavaScript program! This "Hello World" example is the traditional starting point for learning any programming language or framework. It demonstrates the basic syntax and structure you'll use in more complex applications.

What You'll Learn

• Basic syntax and structure of JavaScript
• How to write and execute your first program
• Fundamental concepts that apply to all JavaScript programs

Prerequisites

Before starting, make sure you have JavaScript installed on your system. You can verify the installation by checking the version in your terminal or command prompt.

Code Example

// Hello World in JavaScript
console.log('Hello, World!');

Explanation

This simple example demonstrates the core structure of a JavaScript program. Each line serves a specific purpose:

• The program starts with the main entry point
• It outputs a message to the console or screen
• The program completes successfully

Running the Example

To run this code, save it to a file with the appropriate extension for JavaScript and execute it using the command-line interface or your development environment. For example, save as hello.js and run it.

Next Steps

Now that you've created your first JavaScript program, you can explore more advanced concepts like variables, functions, and control structures. Check out our complete JavaScript guide for more examples and tutorials.