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JavaScript

Lightweight, interpreted, object-oriented language with first-class functions
222.4K
171.9K
+ 1
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What is JavaScript?

JavaScript is most known as the scripting language for Web pages, but used in many non-browser environments as well such as node.js or Apache CouchDB. It is a prototype-based, multi-paradigm scripting language that is dynamic,and supports object-oriented, imperative, and functional programming styles.
JavaScript is a tool in the Languages category of a tech stack.

Who uses JavaScript?

Companies
13109 companies reportedly use JavaScript in their tech stacks, including Airbnb, Instagram, and Slack.

Developers
197799 developers on StackShare have stated that they use JavaScript.

JavaScript Integrations

PHP, AngularJS, Font Awesome, Webpack, and Redux are some of the popular tools that integrate with JavaScript. Here's a list of all 466 tools that integrate with JavaScript.
Pros of JavaScript
1.6K
Can be used on frontend/backend
1.5K
It's everywhere
1.1K
Lots of great frameworks
887
Fast
736
Light weight
416
Flexible
383
You can't get a device today that doesn't run js
284
Non-blocking i/o
233
Ubiquitousness
188
Expressive
51
Extended functionality to web pages
44
Relatively easy language
42
Executed on the client side
26
Relatively fast to the end user
22
Pure Javascript
17
Functional programming
11
Async
8
Setup is easy
7
Because I love functions
7
JavaScript is the New PHP
7
Like it or not, JS is part of the web standard
7
Its everywhere
7
Full-stack
6
Expansive community
6
Future Language of The Web
6
Can be used in backend, frontend and DB
5
Evolution of C
5
Everyone use it
5
Love-hate relationship
5
Easy to hire developers
5
Supports lambdas and closures
5
Agile, packages simple to use
5
Popularized Class-Less Architecture & Lambdas
5
For the good parts
4
Everywhere
4
Hard not to use
4
Promise relationship
4
Scope manipulation
4
It's fun
4
Client processing
4
Nice
4
Easy to make something
4
Can be used on frontend/backend/Mobile/create PRO Ui
4
Easy
4
Photoshop has 3 JS runtimes built in
4
Can be used both as frontend and backend as well
4
Most Popular Language in the World
4
It let's me use Babel & Typescript
4
What to add
4
Clojurescript
4
Function expressions are useful for callbacks
4
No need to use PHP
4
Its fun and fast
4
Powerful
4
Versitile
4
Client side JS uses the visitors CPU to save Server Res
4
1.6K Can be used on frontend/backend
4
Stockholm Syndrome
3
Because it is so simple and lightweight
3
Only Programming language on browser
2
JavaScript j.s
2
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Decisions about JavaScript

Here are some stack decisions, common use cases and reviews by companies and developers who chose JavaScript in their tech stack.

Shared insights
on
JavaScriptJavaScript

All of our Frontend code is written in ECMAScript 6 using React/Redux, running on Node.js JavaScript

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Priit Kaasik
Engineering Lead at Katana MRP · | 8 upvotes · 76.5K views

We undertook the task of building a manufacturing ERP for small branded manufacturers. We needed to build a lot, fast with a small team, and have clear focus on product delivery. We chose JavaScript / Node.js ( React + LoopBack full stack) , Heroku and Heroku Postgres (also Heroku Redis ) . This decision has guided us to picking other key technologies. It has granted us high pace of product delivery and service availability while operating with a small team.

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Lidiexy Alonso
Senior Software Engineer at Palinode LLC · | 6 upvotes · 68.5K views

As developer at Applied Health Analytics we decided to create a React Native App. In terms of #IDE I'm a good fan of PhpStorm cause we have a lot of PHP in the backend, but I've definitely gave a try to Visual Studio Code and now is my primary JavaScript #IDE. I was impress how fast VS Code has become the No.1 @JavaScript Editor in the community.

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Priit Kaasik
Engineering Lead at Katana MRP · | 7 upvotes · 118.8K views

Sometimes #ad-blocking addons can cause a real headache when working with JavaScript apps. Onboarding assistants (Appcues + elevio ), chat (Intercom) and product usage insight (Hotjar) have all landed on their blacklists. I guess there is a perfectly good reason for this that I just don't know.

In order to fix this, we had to set up our own content delivery service. We chose Amazon CloudFront and Amazon S3 to do the job because it has a good synergy with Heroku PaaS we are already using.

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From a StackShare community member: "We are looking to rewrite our outdated front-end with TypeScript. Right now we have a mix of CoffeeScript and vanilla JavaScript. I have read that adopting TypeScript can help enforce better code quality, and best practices. I also heard good things about Flow (JS). Which one would you recommend and why?"

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Kamil Kowalski
Lead Architect at Fresha · | 27 upvotes · 1.1M views

When you think about test automation, it’s crucial to make it everyone’s responsibility (not just QA Engineers'). We started with Selenium and Java, but with our platform revolving around Ruby, Elixir and JavaScript, QA Engineers were left alone to automate tests. Cypress was the answer, as we could switch to JS and simply involve more people from day one. There's a downside too, as it meant testing on Chrome only, but that was "good enough" for us + if really needed we can always cover some specific cases in a different way.

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Blog Posts

May 6 2020 at 6:34AM

Pinterest

JavaScriptC++Varnish+6
3
2327
JavaScriptGitHubReact+12
5
3510
Oct 24 2019 at 7:43PM

AppSignal

JavaScriptNode.jsJava+8
5
730
Oct 11 2019 at 2:36PM

LogRocket

JavaScriptReactAngularJS+8
5
1578
Oct 3 2019 at 7:13PM

Ably Realtime

JavaScriptPythonNode.js+8
4
3261
JavaScriptPythonPubNub+4
7
962

JavaScript Alternatives & Comparisons

What are some alternatives to JavaScript?
TypeScript
TypeScript is a language for application-scale JavaScript development. It's a typed superset of JavaScript that compiles to plain JavaScript.
Node.js
Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.
Dart
Dart is a cohesive, scalable platform for building apps that run on the web (where you can use Polymer) or on servers (such as with Google Cloud Platform). Use the Dart language, libraries, and tools to write anything from simple scripts to full-featured apps.
CoffeeScript
It adds syntactic sugar inspired by Ruby, Python and Haskell in an effort to enhance JavaScript's brevity and readability. Specific additional features include list comprehension and de-structuring assignment.
Java
Java is a programming language and computing platform first released by Sun Microsystems in 1995. There are lots of applications and websites that will not work unless you have Java installed, and more are created every day. Java is fast, secure, and reliable. From laptops to datacenters, game consoles to scientific supercomputers, cell phones to the Internet, Java is everywhere!
See all alternatives

JavaScript's Followers
171892 developers follow JavaScript to keep up with related blogs and decisions.