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Selenium vs jsdom: What are the differences?

Introduction

In the realm of web development and testing, understanding the key differences between Selenium and jsdom is essential for selecting the right tool for the job. Both are popular choices for testing web applications and manipulating the DOM, but they have distinct features that set them apart.

  1. Browser Interaction: Selenium is primarily used for automating interactions with real browsers, such as Chrome, Firefox, and Safari, allowing for a more realistic simulation of user behavior. On the other hand, jsdom is a lightweight, pure JavaScript implementation of the DOM that simulates a browser environment within Node.js, making it ideal for server-side testing and manipulation of DOM elements.

  2. Support for Complex Browser Interactions: Selenium provides robust support for handling complex browser interactions, such as clicking on elements, filling out forms, and navigating through different pages. In contrast, jsdom has limitations when it comes to simulating certain browser behaviors like CSS rendering, layout calculations, and other client-specific features.

  3. Performance: Selenium is typically slower due to its reliance on real browsers, which can lead to longer test execution times, especially when running numerous tests in parallel. Jsdom, being a lightweight library, has faster execution times and is more suitable for quick and simple DOM manipulations without the overhead of launching a full-fledged browser instance.

  4. Testing Environments: Selenium is well-suited for end-to-end testing in a real browser environment, ensuring that the web application behaves as expected across different browsers. Jsdom, on the other hand, is more suitable for unit testing and integration testing within a Node.js environment, where a full browser runtime is not required.

  5. Integration with Testing Frameworks: Selenium seamlessly integrates with popular testing frameworks like JUnit, TestNG, and Jest, providing a wide range of features for writing and executing test cases. Jsdom, being a JavaScript library, can be easily integrated with tools like Mocha and Jasmine for testing DOM manipulation and server-side logic.

  6. Community and Support: Selenium has a vast community of developers and contributors that actively maintain and improve the tool, ensuring constant updates and support. Jsdom, while also popular, may have a smaller community in comparison, which could affect the availability of resources and documentation for troubleshooting and learning.

In Summary, understanding the key differences between Selenium and jsdom is crucial for choosing the right tool based on the specific requirements of your web development and testing projects.

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we are having one web application developed in Reacts.js. in the application, we have only 4 to 5 pages that we need to test. I am having experience in selenium with java. Please suggets which tool I should use. and why ............................ ............................ .............................

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Prashanth Marappa
Senior Software Engineer at Mphasis · | 1 upvotes · 226.6K views
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with the help of selenium we can automate react js for functional testing

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Pros of jsdom
Pros of Selenium
  • 1
    Lightweight
  • 177
    Automates browsers
  • 154
    Testing
  • 101
    Essential tool for running test automation
  • 24
    Record-Playback
  • 24
    Remote Control
  • 8
    Data crawling
  • 7
    Supports end to end testing
  • 6
    Easy set up
  • 6
    Functional testing
  • 4
    The Most flexible monitoring system
  • 3
    End to End Testing
  • 3
    Easy to integrate with build tools
  • 2
    Comparing the performance selenium is faster than jasm
  • 2
    Record and playback
  • 2
    Compatible with Python
  • 2
    Easy to scale
  • 2
    Integration Tests
  • 0
    Integrated into Selenium-Jupiter framework

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Cons of jsdom
Cons of Selenium
    Be the first to leave a con
    • 8
      Flaky tests
    • 4
      Slow as needs to make browser (even with no gui)
    • 2
      Update browser drivers

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    What is jsdom?

    It is a pure-JavaScript implementation of many web standards, notably the WHATWG DOM and HTML Standards, for use with Node.js. In general, the goal of the project is to emulate enough of a subset of a web browser to be useful for testing and scraping real-world web applications.

    What is Selenium?

    Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that. Boring web-based administration tasks can (and should!) also be automated as well.

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    What tools integrate with jsdom?
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    What are some alternatives to jsdom and Selenium?
    PhantomJS
    PhantomJS is a headless WebKit scriptable with JavaScript. It is used by hundreds of developers and dozens of organizations for web-related development workflow.
    Enzyme
    Enzyme is a JavaScript Testing utility for React that makes it easier to assert, manipulate, and traverse your React Components' output.
    Domino
    Use our cloud-hosted infrastructure to securely run your code on powerful hardware with a single command — without any changes to your code. If you have your own infrastructure, our Enterprise offering provides powerful, easy-to-use cluster management functionality behind your firewall.
    Puppeteer
    Puppeteer is a Node library which provides a high-level API to control headless Chrome over the DevTools Protocol. It can also be configured to use full (non-headless) Chrome.
    Git
    Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.
    See all alternatives