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JavaScript is a dynamic programming language that's used for web development, in web applications, for game development, and lots more. It allows you to implement dynamic features on web pages that cannot be done with only HTML and CSS.

Many browsers use JavaScript as a scripting language for doing dynamic things on the web. Any time you see a click-to-show dropdown menu, extra content added to a page, and dynamically changing element colors on a page, to name a few features, you're seeing the effects of JavaScript.

JavaScript Usage by Industry

• finance: 7%
• advertising and marketing: 5%
• education: 5%
• entertainment: 5%
• business support and logistics: 4%
• healthcare: 4%
• retail: 3%
• government: 2%
• manufacturing: 2%

Most used JavaScript framework used by Industry

Advantages of JavaScript:

• Regardless of where you host JavaScript, it always gets executed on client environment to save lots of a bandwidth and make execution process fast.
• In JavaScript, XMLHttpRequest is an important object that was designed by Microsoft. The object call made by XMLHttpRequest as a asynchronous HTTP request to the server to tranfser the data to both sides without reloading the page
• The biggest advantage to JavaScript having a ability to support all modern browsers and produce an equivalent result.
• Global companies support community development by creating projects that are important. An example is Google (created Angular framework) or Facebook (created the React.js framework).
• JavaScript is employed everywhere on the web .
• JavaScript plays nicely with other languages and may be utilized in an enormous sort of applications.
• There are many open source projects that provide a useful help at the developer’s add JavaScript.
• There are many available courses within the field of JavaScript, because of which you’ll quickly and simply expand your knowledge of this programing language .
• It is not difficult to start working in JavaScript. For this reason, many of us prefer to start their adventure with the IT sector from learning this language.
• It gives the power to make rich interfaces.
• There are some ways to use JavaScript through Node.js servers. It is possible to develop a whole JavaScript app from front to back using only JavaScript.

10 POPULAR WEBSITES BUILT USING JAVASCRIPT

Google

The search engine we all know and love (or loathe) uses JavaScript for both its front- and back-end. Google has become so popular that it’s become a verb: “just Google it,” they say.

Google is Alexa’s number one ranked webpage worldwide, and - as of January 2019 - it’s  estimated that more than 1.6 billion unique users visit the site each month.

YouTube

First created in 2005, the Google subsidiary is the world’s most popular video sharing platform. YouTube has skyrocketed in popularity. It’s ranked second worldwide in terms of web traffic, and has popularized the way people watch, record, and upload a video.

Facebook

The world’s most popular social media platform is written using JavaScript and quite a few other stacks. The company also owns Instagram, WhatsApp, Oculus, and GrokStyle.

Wikipedia

Wikipedia is the Internet’s encyclopedia based on open collaboration. The website uses a simple design, doesn’t show display ads, and is 100% free. Wikipedia is built on JavaScript, PHP, and more.

Yahoo!

Yahoo! is one of the pioneers of the Internet. Yahoo!’s homepage is a mix of a search engine, news, and email. Yahoo! uses JS, HTML5, and more.

Amazon

Amazon, the global marketplace for goods, uses JavaScript, Perl, Java, and others. Amazon as a company is the largest e-commerce marketplace in the world as measured by revenue.

eBay

Not unlike Amazon, eBay is an online resource for purchasing goods, although it’s better known as an auction service. Did you know that, along with Java, Oracle, and several others, JS is used?

QQ

Although not as well known in North America, QQ is an instant messaging service that’s popular predominantly in China. QQ ranks in the top 10 in most-visited websites worldwide.

Twitter

Twitter is increasingly becoming a platform where people go for their news. The fast-moving feeds and curated content make for a constant influx of information and the design has remained largely unchanged in recent years. Rails, JavaScript and a multitude of other languages are used for Twitter.

LinkedIn

LinkedIn is a social media platform for professionals. What programming language is partly responsible for allowing you to sync with your latest connection on LinkedIn? You guessed it, JavaScript, Java, and more.