Do I need ES6 features to follow these examples?

Most examples use core syntax supported by modern browsers. ES6 features are noted where used.

Can I modify and share these examples?

Yes. These are for learning—copy, tweak, and share your variations for practice.

Where should beginners start?

Begin with Hello World, variables, arithmetic, then progress to control flow, functions, strings, and arrays.

Files and Browser Utilities

Perform browser-oriented tasks: include external scripts, extract file extensions, and encode strings to Base64. Practical utilities for web scripting and integration.

Try JavaScript Compiler

JavaScript Program to Get File Extension

Extract extension.

                          function ext(p){const i=p.lastIndexOf("."); return i>-1?p.slice(i+1):"";} console.log(ext("file.tar.gz"));
                        

Output

JavaScript Program to Include a JS file in Another JS file

Dynamically load a script.

                          function load(src){const s=document.createElement("script"); s.src=src; document.head.appendChild(s);} load("/path/to/file.js");
                        

Output

JavaScript Program to Find ASCII Value of Character

Use charCodeAt.

const ch="A"; console.log(ch.charCodeAt(0));

Output

Keep Practicing

Use the online compiler to run examples and test variations. Reinforce learning by building small scripts for each topic.

FAQ

Yes. You can copy the code into the JavaScript compiler page or your browser console to see the output. Some examples use console.log to print results.

Most examples use foundational syntax available in modern browsers. Where templates or arrow functions are used, they follow ES6 conventions widely supported today.

Absolutely. These examples are provided for learning. Copy, tweak values, and experiment to understand how the logic changes.

Start with Hello World, variables, and arithmetic. Then try control flow, functions, strings, and arrays to build confidence.

Learn JavaScript by Practicing Examples

Hands-on practice is the fastest way to understand JavaScript. Each example above focuses on a single concept—from strings, arrays, and objects to math utilities, dates, loops, and functions. Try editing variables, adding conditions, or refactoring logic, then observe the output changes instantly.

Use our tools to deepen your learning: JavaScript Compiler to run snippets, and the JavaScript Tutorial for guided theory and practice.

Beginner-Friendly

Start with variables, operators, and control flow. Build confidence with simple, readable programs.

Practical Patterns

Practice common tasks like formatting strings, manipulating arrays, and working with dates.

Grow Skills

Advance to objects, classes, and asynchronous patterns such as promises and async/await.

Files and Browser Utilities

JavaScript Program to Get File Extension

Output

JavaScript Program to Include a JS file in Another JS file

Output

JavaScript Program to Find ASCII Value of Character

Output

Keep Practicing

FAQ

Can I run these examples in the browser?

Do I need ES6 features to follow these examples?

Can I copy and modify the examples?

Where should beginners start?

Learn JavaScript by Practicing Examples

Beginner-Friendly

Practical Patterns

Grow Skills