Dart vs. JavaScript: Which One to Choose?

Are you a web developer looking for a programming language to build your next project? If so, you may have come across two popular options: Dart and JavaScript. Both languages have their own unique features and benefits, but which one should you choose? In this article, we'll explore the differences between Dart and JavaScript to help you make an informed decision.

What is Dart?

Dart is a programming language developed by Google. It was first introduced in 2011 and was designed to be a general-purpose language that could be used for web, mobile, and desktop applications. Dart is an object-oriented language that supports both static and dynamic typing. It also has a garbage collector, which automatically frees up memory that is no longer being used.

One of the main advantages of Dart is its performance. Dart code can be compiled to native code, which means that it can run faster than interpreted languages like JavaScript. Dart also has a strong type system, which can help catch errors before they occur.

What is JavaScript?

JavaScript is a programming language that was first introduced in 1995. It was designed to be a scripting language for web browsers, but it has since evolved to be used for server-side programming as well. JavaScript is an interpreted language, which means that it is executed by the browser or server as it is read.

One of the main advantages of JavaScript is its ubiquity. JavaScript is supported by all modern web browsers, which means that it can be used to build web applications that work on any device. JavaScript also has a large and active community, which means that there are many resources available for developers.


The syntax of Dart and JavaScript are quite different. Dart has a C-style syntax, which means that it uses curly braces and semicolons to delimit statements. JavaScript, on the other hand, has a more flexible syntax that allows for more concise code.

Here's an example of a "Hello, World!" program in Dart:

void main() {
  print('Hello, World!');

And here's the same program in JavaScript:

console.log('Hello, World!');

As you can see, the syntax of the two languages is quite different. If you're already familiar with one of the languages, you may find it easier to stick with that language.


Dart is a statically typed language, which means that variables must be declared with a specific type. JavaScript, on the other hand, is a dynamically typed language, which means that variables can change type at runtime.

Here's an example of a variable declaration in Dart:

int x = 5;

And here's the same variable declaration in JavaScript:

var x = 5;

As you can see, the syntax is quite different. In Dart, we declare the type of the variable (in this case, int), whereas in JavaScript, we use the var keyword to declare a variable without a specific type.


Both Dart and JavaScript have large and active communities, which means that there are many libraries available for developers. Dart has its own package manager, called pub, which makes it easy to install and manage dependencies.

JavaScript has several package managers, including npm and yarn. These package managers make it easy to install and manage dependencies, and there are many libraries available on these platforms.


As mentioned earlier, Dart is a compiled language, which means that it can run faster than interpreted languages like JavaScript. However, JavaScript has come a long way in terms of performance in recent years. Modern JavaScript engines, such as V8 (used by Google Chrome), can compile JavaScript code to native code, which can make it run much faster.

In general, Dart is still faster than JavaScript, but the difference in performance may not be noticeable for most web applications.


So, which language should you choose? The answer depends on your specific needs and preferences. If you're looking for a language that is fast and has a strong type system, Dart may be the way to go. If you're looking for a language that is ubiquitous and has a large community, JavaScript may be the better choice.

Ultimately, both languages are capable of building high-quality web applications. The best way to decide which language to use is to try them both out and see which one you prefer. Happy coding!

Additional Resources

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Written by AI researcher, Haskell Ruska, PhD (haskellr@mit.edu). Scientific Journal of AI 2023, Peer Reviewed