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ember.js VS Underscore.js

Compare ember.js VS Underscore.js and see what are their differences

ember.js logo ember.js

A JavaScript framework for creating ambitious web apps

Underscore.js logo Underscore.js

Underscore is a utility-belt library for JavaScript that provides a lot of the functional...
  • ember.js Landing page
    Landing page //
    2022-04-15
  • Underscore.js Landing page
    Landing page //
    2018-12-17

ember.js features and specs

  • Convention Over Configuration
    Ember.js emphasizes conventions, which can help streamline the development process and reduce decision fatigue by providing out-of-the-box solutions and standardizing code structure.
  • Robust CLI
    Ember CLI is a powerful command-line tool that helps automate numerous development tasks, such as scaffolding, building, testing, and deploying applications, making the developer's workflow more efficient.
  • EMBER Data
    Ember Data is a robust library for handling data models and relationships. It simplifies the process of interacting with APIs and managing data, offering built-in support for RESTful APIs.
  • Strong Community and Ecosystem
    Ember.js has a strong and active community, which results in extensive documentation, numerous addons, and regular updates, enhancing the framework's reliability and feature set.
  • Two-Way Data Binding
    Ember.js supports two-way data binding, which helps keep the model and the view in sync automatically. This feature simplifies the management of user input and model updates.
  • Built-in Testing
    Ember.js has built-in testing support, making it easier to write and run tests for applications. This facilitates the development of robust, maintainable, and bug-free code.
  • Focused on Large Applications
    Ember.js is particularly well-suited for ambitious, large-scale applications due to its structure and built-in best practices, which promote maintainability and scalability.

Possible disadvantages of ember.js

  • Steep Learning Curve
    Ember.js has a significant learning curve, particularly for developers who are new to its conventions and deep abstractions. This can be a barrier to entry for some.
  • Performance Overhead
    The comprehensive nature of Ember.js can lead to performance overhead, especially for smaller applications. The framework's rich feature set may be more than what is needed for simpler projects.
  • Less Flexibility
    The convention-over-configuration approach can reduce flexibility and make it harder to deviate from the prescribed way of doing things, which can be restrictive for developers who need more control.
  • Heavy Dependencies
    Ember.js applications can come with numerous dependencies, which can increase the bundle size and, subsequently, the load time of the application.
  • Slow to Adapt New Trends
    Being a mature framework, Ember.js can be slower to adopt the latest web development trends compared to newer frameworks, leading to potential lag in leveraging cutting-edge features.
  • Complexity in Customization
    While conventions can be beneficial, scenarios that require custom configurations can become complex and cumbersome, potentially complicating the development process.
  • Smaller Talent Pool
    Compared to more mainstream frameworks like React or Angular, there is a smaller pool of developers who are proficient in Ember.js, which can make hiring and collaboration more challenging.

Underscore.js features and specs

  • Utility Functions
    Underscore.js provides a wealth of utility functions for common tasks such as map, reduce, filter, and more, making it easier to perform operations on arrays, objects, and collections.
  • Consistency
    The library offers a consistent API, which can make your code more readable and maintainable by providing a standard way to perform common programming tasks.
  • Lightweight
    Underscore.js is lightweight compared to full-featured libraries like Lodash, which can be a benefit if you're looking to minimize your application's footprint.
  • Browser Compatibility
    It supports a wide range of JavaScript environments, making it a good choice for projects that need to work across different browsers and Node.js.
  • Quick to Learn
    Easy to pick up for developers with even a basic understanding of JavaScript, due to its straightforward documentation and familiar function names.

Possible disadvantages of Underscore.js

  • Performance
    Underscore.js may not offer the same level of performance optimizations as more modern utility libraries like Lodash, potentially leading to slower execution for some tasks.
  • Limited Functionality
    While it covers many basic utility functions, its feature set is not as extensive as Lodash or other similar libraries, which provide a broader range of capabilities.
  • Outdated
    With the advent of ECMAScript 5 and later versions, many of the functions provided by Underscore.js are now natively available in JavaScript, reducing its necessity.
  • No Modularization
    Underscore does not support modular builds in the same way Lodash does, meaning you might end up including the entire library even if you only need a few functions.
  • Community and Maintenance
    While still maintained, Underscore.js has seen less active development and contributions compared to newer libraries, which could impact its long-term viability and support.

Analysis of ember.js

Overall verdict

  • Yes, Ember.js is considered a good choice for developing ambitious web applications, particularly when the project benefits from a strong structure and standardized patterns.

Why this product is good

  • Ember.js is a robust JavaScript framework known for its convention over configuration philosophy, which speeds up development by providing built-in best practices and tools. It features a powerful command-line interface, two-way data binding, and an integrated router, making it particularly adept at creating scalable single-page applications. Additionally, Ember.js supports a vibrant community and a comprehensive ecosystem of plugins and add-ons, reducing the need to reinvent the wheel for common tasks.

Recommended for

  • Developers and teams building large-scale or complex web applications
  • Projects that require long-term maintenance and stability
  • Teams that benefit from a strong convention-driven approach
  • Applications that need real-time data updates and dynamic interfaces

Analysis of Underscore.js

Overall verdict

  • Underscore.js is a reasonable choice if you need a lightweight library for concise, functional programming helpers. While newer libraries or vanilla JavaScript have made some of its functions less essential, Underscore.js remains useful for its simplicity and comprehensive utility set.

Why this product is good

  • Underscore.js is a popular JavaScript library that provides a comprehensive set of utility functions for common programming tasks. It is valued for its simplicity and ease of integration, especially in projects that require functional programming patterns but do not need the full capabilities of larger libraries like Lodash. Underscore.js is lightweight and can significantly enhance productivity by offering functions for tasks such as object manipulation, array operations, and function binding, making code more readable and maintainable.

Recommended for

    Developers working on smaller projects or legacy codebases that require a reliable utility library with functional programming techniques. It’s also suitable for those who prefer a minimalistic approach and don’t require the extensive features of heavier alternatives.

ember.js videos

What is Ember.js?

More videos:

  • Review - A preview of Ember.js Octane

Underscore.js videos

Introduction to Underscore.JS

Category Popularity

0-100% (relative to ember.js and Underscore.js)
Javascript UI Libraries
44 44%
56% 56
JavaScript Framework
76 76%
24% 24
Development Tools
0 0%
100% 100
JS Library
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 ember.js and Underscore.js

ember.js Reviews

Top JavaScript Frameworks in 2025
Ember.JS is an open-source, JavaScript client-side framework that is useful for developing web applications. It provides a complete solution containing data management and application flow to develop an application, making it one of the reasons developers prefer to use it. Ember.JS also uses an MVVM architecture pattern along with a command-line interface tool that helps in...
Source: solguruz.com
20 Next.js Alternatives Worth Considering
Ember.js is old school cool, a framework that’s been whispering sweet nothings to devs for years, helping build ambitious web applications. It wraps its arms around conventions and provides everything you need to build rich, complex web UIs.
The 20 Best Laravel Alternatives for Web Development
Ember.js — the ambitious framework that promises a developer heaven, paving your road to productivity with a convention-over-configuration dogma and a solidly structured path.
9 Best JavaScript Frameworks to Use in 2023
Ember.js: Ember.js provides a lot of built-in features and conventions, making it easy to get started and build complex applications. It has a strong focus on developer productivity.
Source: ninetailed.io
JavaScript: What Are The Most Used Frameworks For This Language?
In addition, it offers a powerful command-line interface (CLI) that can generate boilerplate code and automate common tasks, making it easier to get started and build applications quickly. With a strong focus on performance, Ember.JS provides features like fast initial page loads, incremental rendering and advanced caching mechanisms.
Source: www.bocasay.com

Underscore.js Reviews

We have no reviews of Underscore.js yet.
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Social recommendations and mentions

ember.js might be a bit more popular than Underscore.js. We know about 33 links to it since March 2021 and only 23 links to Underscore.js. 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.

ember.js mentions (33)

  • Thinking in Templates
    Django, for example, has a template engine that allows you to define a template in HTML and render it with a context -- data usually sourced from the database via the Django view. However, with its filters and helpers, it is almost too powerful -- undermining the core idea of templating. The same goes for Ember.js, as well. - Source: dev.to / about 1 month ago
  • Embroider & Vite & net::ERR_ABORTED 504 (Outdated Optimize Dep)
    While working on EmberJS projects, I've been using pre-alpha version of @embroider/app-blueprint quite a lot lately and I hit a baffling error:. - Source: dev.to / 3 months ago
  • ResponsiveImage & EmberJS & glob vite imports
    I had a need to dynamically load a folder images in my EmberJS app that is using embroider-build/app-blueprint and ResponsiveImage. Turns out I could use vite glob imports and resulting code looked something like:. - Source: dev.to / 3 months ago
  • Installing EmberJS v2 addons from GitHub forks using PNPM
    If you're using PNPM as a package manager for your EmberJS project and you find yourself in a need to install a v2 addon from git(hub) fork (because you have a branch with patched version), then you might find that GitHub URLs in package.json tricks don't work for you. - Source: dev.to / 9 months ago
  • Add custom layer to embe-leaflet
    Ember-leaflet is a very popular addon from EmberJS ecosystem that allows a lot of flexibility. - Source: dev.to / 10 months ago
View more

Underscore.js mentions (23)

  • JavaScript evolution: From Lodash and Underscore to vanilla
    Underscore was created by Jeremy Ashkenas (the creator of Backbone.js) in 2009 to provide a set of utility functions that JavaScript lacked at the time. It was also created to work with Backbone.js, but it slowly became a favorite among developers who needed utility functions that they could just call and get stuff done with without having to worry about the inner implementations and browser compatibility. - Source: dev.to / 6 months ago
  • KlongPy: High-Performance Array Programming in Python
    There was a step-change improvement for me when I tried expressing some JS patterns via `underscore.js` instead of procedurally: eg: http://underscorejs.org/#each Thinking of something as `each | map | filter | sum` is waaay less buggy than writing bespoke procedural code to do the same thing. No doubt there is a "cost" to it as well, but the _abstraction_ is valuable. Now, if there were a "compiler" which could... - Source: Hacker News / 7 months ago
  • 100+ Must-Have Web Development Resources
    Underscore.js: A utility library that offers a full set of functional programming helpers without extending any built-in JavaScript objects. - Source: dev.to / 8 months ago
  • Mastering Node.js
    Underscore contains just about every core utility method you want. - Source: dev.to / 11 months ago
  • 8 NPM Packages for JavaScript Beginners [2024][+tutorials]
    Not too far behind is Underscore.js, another utility library that's all about enhancing your JavaScript mojo. Whether you're dealing with arrays, objects, or strings, Underscore has got something for you. It's like Lodash's sibling, offering similar functionalities but with its own flair. The choice between them is like picking between chocolate and vanilla - it really comes down to personal taste. - Source: dev.to / about 1 year ago
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What are some alternatives?

When comparing ember.js and Underscore.js, you can also consider the following products

AngularJS - AngularJS lets you extend HTML vocabulary for your application. The resulting environment is extraordinarily expressive, readable, and quick to develop.

jQuery - The Write Less, Do More, JavaScript Library.

Vue.js - Reactive Components for Modern Web Interfaces

React Native - A framework for building native apps with React

Backbone.js - Give your JS App some Backbone with Models, Views, Collections, and Events

Babel - Babel is a compiler for writing next generation JavaScript.