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JavaScript VS Kotlin

Compare JavaScript VS Kotlin and see what are their differences

JavaScript logo JavaScript

Lightweight, interpreted, object-oriented language with first-class functions

Kotlin logo Kotlin

Statically typed Programming Language targeting JVM and JavaScript
  • JavaScript Landing page
    Landing page //
    2023-08-05

We recommend LibHunt JavaScript for discovery and comparisons of trending JavaScript projects.

  • Kotlin Landing page
    Landing page //
    2023-05-09

We recommend LibHunt Kotlin for discovery and comparisons of trending Kotlin projects.

JavaScript features and specs

  • Wide Browser Support
    JavaScript is supported by all modern web browsers without the need for any plugins, making it highly versatile for client-side scripting.
  • Asynchronous Programming
    JavaScript supports asynchronous programming with features like callbacks, Promises, and async/await, which helps in efficiently handling tasks such as HTTP requests.
  • Rich Ecosystem and Libraries
    The JavaScript ecosystem includes a vast amount of libraries and frameworks like React, Angular, Vue, and Node.js, which streamline development processes.
  • Community Support
    JavaScript has a large and active community, providing extensive resources, documentation, and forums for troubleshooting and development advice.
  • Event-Driven
    The language is inherently event-driven, making it suitable for developing interactive web applications that react to user inputs.
  • Full-Stack Development
    With the advent of Node.js, JavaScript can be used for both client-side and server-side development, enabling full-stack development using a single language.

Possible disadvantages of JavaScript

  • Security Issues
    Being an interpreted language that runs in the browser, JavaScript code is visible to the user, making it susceptible to security risks such as Cross-Site Scripting (XSS).
  • Browser Compatibility
    While JavaScript itself is widely supported, different browsers may implement JavaScript functions and standards differently, leading to compatibility issues.
  • Performance
    JavaScript is generally slower than compiled languages such as C++ or Java. Heavy computations can lead to performance bottlenecks.
  • Single Inheritance
    JavaScript uses prototypal inheritance instead of classical inheritance, which can be confusing for developers coming from object-oriented programming backgrounds.
  • Dynamic Typing
    JavaScript's dynamic typing can lead to runtime errors that are hard to debug, as variable types are checked at runtime rather than during compilation.
  • Fragmentation
    The ecosystem has many competing libraries, frameworks, and tools, which can make it overwhelming for developers to choose the right technologies for their projects.

Kotlin features and specs

  • Interoperability
    Kotlin is fully interoperable with Java, which means developers can use both languages within the same project and have seamless communications between them.
  • Conciseness
    Kotlin reduces boilerplate code, making the codebase easier to read and maintain. It offers concise syntax and reduces the amount of code.
  • Null Safety
    Kotlin's type system is designed to eliminate null pointer exceptions by making all types non-nullable by default, thus enhancing reliability and reducing runtime crashes.
  • Coroutines
    Kotlin provides built-in support for coroutines, which makes writing asynchronous code more straightforward and readable compared to traditional approaches.
  • Modern Language Features
    Kotlin includes advanced features such as lambda expressions, extension functions, higher-order functions, and more, improving productivity and providing more expressive code constructs.
  • Full Tooling Support
    Kotlin is supported by major IDEs like IntelliJ IDEA, Android Studio, Eclipse, and others, with full tooling support including debugging, refactoring, and linting.
  • Community and Ecosystem
    Kotlin has a growing and vibrant community with extensive resources, libraries, and frameworks that support a wide range of programming needs.

Possible disadvantages of Kotlin

  • Learning Curve
    Despite its modern features, Kotlin has a learning curve, especially for developers who are more familiar with Java or other programming languages.
  • Compilation Speed
    Kotlin's compilation speed is often slower compared to Java, which can impact the development workflow, especially in larger projects.
  • Runtime Performance
    While Kotlin performs comparably to Java in many cases, there can be minor performance hits in certain scenarios due to additional language features.
  • Fewer Resources Compared to Java
    Although growing, Kotlin's ecosystem of libraries and frameworks is still smaller compared to Java's well-established and extensive ecosystem.
  • Tooling Maturity
    While support in major IDEs is robust, some third-party tools and plugins may not fully support Kotlin, leading to potential integration issues.
  • Android Specific Challenges
    In the context of Android development, some legacy libraries and tools might not be fully compatible with Kotlin, necessitating additional workarounds.
  • Job Market
    While demand for Kotlin developers is growing, Java still dominates the job market, which may limit opportunities for Kotlin-focused roles in certain regions.

JavaScript videos

Learn JavaScript in 7 minutes | Create Interactive Websites | Code in 5

More videos:

  • Review - Top 10 JavaScript Interview Questions
  • Review - Learn JavaScript in 12 Minutes

Kotlin videos

10 reasons to try Kotlin for Android development

More videos:

  • Review - What can Kotlin do for me? (GDD Europe '17)
  • Review - Java or Kotlin for Android Development – Which One Is Better?

Category Popularity

0-100% (relative to JavaScript and Kotlin)
Programming Language
47 47%
53% 53
OOP
52 52%
48% 48
Generic Programming Language
Languages
100 100%
0% 0

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare JavaScript and Kotlin

JavaScript Reviews

Top 10 Rust Alternatives
In simple words, the main goal of JavaScript is to develop web pages and is used for authentication procedures. Some of the pros of using JavaScript as an alternative to Rust are follows.
Top 15 jQuery Alternatives To Know
ExtJS, as the name suggests, stands for Extended JavaScript. As an offering from Sencha, it depends on YahooUserInterface. ExtJS helps in creating data intensified HTML5 apps with JavaScript. It consists of a huge collection of customizable and high-performance widgets that assist in creating cross-platform mobile and web apps, for any type of modernized device.
The 10 Best Programming Languages to Learn Today
JavaScript skills are always in high demand – most of the world's top websites and apps rely on JavaScript in one way or another. Plus, JavaScript is a great springboard for learning more complex programming languages.
Source: ict.gov.ge

Kotlin Reviews

Explore 9 Top Eclipse Alternatives for 2024
Cross-platform development with variants targeting JVM (Kotlin/JVM), JavaScript (Kotlin/JS), and native code (Kotlin/Native).
Source: aircada.com
Top 10 Rust Alternatives
The last computer programming language to stand out as an exceptional alternative to Rust is named Kotlin. It is typed statically and was manufactured for Java machines.

Social recommendations and mentions

Based on our record, Kotlin seems to be more popular. It has been mentiond 81 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

JavaScript mentions (0)

We have not tracked any mentions of JavaScript yet. Tracking of JavaScript recommendations started around Mar 2021.

Kotlin mentions (81)

  • Doodle Weather Clone
    Doodle helps you create beautiful, modern apps entirely in Kotlin. Its render model is intuitive yet powerful, making it easy to achieve complex UIs with pixel level precision and layouts. This simplicity and power applies to everything from user input to drag and drop. Doodle lets you build and animate anything. - Source: dev.to / about 2 months ago
  • Kotlin vs. Java: A Grand Finale and Farewell (But Not Goodbye!)
    Kotlin Official Website: Your one-stop shop for all things Kotlin, with comprehensive documentation, tutorials, and resources: https://kotlinlang.org/. - Source: dev.to / 6 months ago
  • Day 0 of #100daysofMiva || Setting up for success
    Next, I selected the technologies and frameworks I want to focus on during this challenge. For frontend development, I'll be exploring Reactjs, Vue.js, Bootstrap, Next.js, and MUI. For backend development, I'll be diving into Express, Django, Node.js, PHP, and Firebase. Additionally, I'll be learning Kotlin, React Native, and Flutter for mobile development, and APIs, PostgreSQL, Cloud, and MongoDB for full stack... - Source: dev.to / 9 months ago
  • Better Animations... in Latest Doodle
    Doodle helps you create beautiful, modern apps entirely in Kotlin. Its render model is intuitive yet powerful, making it easy to achieve complex UIs with pixel level precision and layouts. This simplicity and power applies to everything from user input to drag and drop. Doodle lets you build and animate anything. - Source: dev.to / 10 months ago
  • The Top Programming Languages to Learn in 2024
    Kotlin, fully interoperable with Java, is increasingly used for Android app development. It offers a more concise syntax and improved safety features compared to Java, making it a modern language for mobile development. Discover more about Kotlin here. - Source: dev.to / 10 months ago
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What are some alternatives?

When comparing JavaScript and Kotlin, you can also consider the following products

Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.

Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible

Dart - A new web programming language with libraries, a virtual machine, and tools

Rust - A safe, concurrent, practical language

Typescript - TypeScript allows developers to compile a superset of JavaScript to plain JavaScript on any browser, host, or operating system.

Elixir - Dynamic, functional language designed for building scalable and maintainable applications