If you’re stepping into the world of web development, you’re bound to face the question: JavaScript vs. TypeScript — which should you learn first?

Both languages are essential tools in modern development. But depending on your goals, one might be a better starting point. In this post, we’ll break down what each language does, how they differ, and help you decide which one to tackle first.

What Is JavaScript?

JavaScript is a scripting language used to create interactive websites. It’s the backbone of front-end development and runs in every modern browser. Think dynamic buttons, real-time updates, and interactive forms — that’s JavaScript at work.

function greet(name) {
  console.log("Hello, " + name + "!");
}

greet("Amol");

Here,

• function greet(name) defines a function.
• console.log outputs text to the browser console.
• Calling greet("Amol") logs: Hello, Amol!

Simple, right?

What Is TypeScript?

TypeScript is a superset of JavaScript. That means all JavaScript is valid TypeScript, but TypeScript adds extra features, especially static typing.

With TypeScript, you can catch errors before running your code. It helps teams build large applications with fewer bugs and better structure.

function greet(name: string): void {
  console.log("Hello, " + name + "!");
}

greet("Amol");

What’s Different?

• name: string explicitly declares that name must be a string.
• : void indicates the function doesn’t return anything.

If you try greet(42), TypeScript will throw an error before running the code. 

Error : Argument of type 'number' is not assignable to parameter of type 'string'.

That’s a big win for reliability.

JavaScript vs. TypeScript: Key Differences

Should You Learn JavaScript or TypeScript First?

Short answer:

• If you’re just starting out: Learn JavaScript first. It’s simpler, widely used, and gives you instant feedback in the browser.
• If you already know JavaScript basics: Add TypeScript to your toolkit. It makes your code more predictable and maintainable.

Let’s look deeper.

Why Learn JavaScript First?

• It’s the foundation of web development.
• Works out of the box in any browser.
• Huge community support and learning resources.
• Helps you understand core programming concepts like variables, functions, loops, and objects.

Why Learn TypeScript Later?

• It’s built on top of JavaScript, so knowing JS first helps.
• Better for large projects or team-based development.
• Adds type safety, reducing bugs and improving code readability.

Real-World Example

Let’s say you’re building a to-do app.

JavaScript Version:

function addTask(task) {
  tasks.push(task);
}

You might accidentally do:

addTask(123);

It still runs — but it might break your UI.

TypeScript Version:

function addTask(task: string): void {
  tasks.push(task);
}

Try addTask(123) here, and TypeScript stops you immediately. Safer and cleaner.

Final Thoughts: JavaScript vs. TypeScript

The JavaScript vs. TypeScript debate isn’t about which one is better overall — it’s about what’s better for you right now.

Start with JavaScript if you’re new to programming. Once you’re comfortable, leveling up with TypeScript will give you a big advantage in writing scalable, error-resistant code.

In short:

• Beginner? Learn JavaScript.
• Already know JS? Learn TypeScript.

Both skills are in high demand, and together they make you a stronger, more confident developer.

FAQs

Is TypeScript harder than JavaScript?

Yes, a bit. It adds new concepts like types and interfaces. But once you know JavaScript, the transition is smooth.

Can I skip JavaScript and go straight to TypeScript?

Technically, yes. But it’s like learning to sprint before you can walk. TypeScript assumes you understand JavaScript.

Are JavaScript and TypeScript used together?

Absolutely. TypeScript compiles down to JavaScript, so they work hand-in-hand in modern projects.

Conclusion

JavaScript vs. TypeScript isn’t a battle — it’s a journey. Start with JavaScript to build a strong foundation. Then, move to TypeScript to take your skills to the next level.

By mastering both, you open the door to more job opportunities, better projects, and cleaner code.

Happy Scripting..!