@JAVASCRIPT — USE CASES
What is JavaScript?
JavaScript is a high-level programming language, sometimes also called a scripting language. It is used on both server and client-side but mostly used on client-side. It is used to write dynamic programs for web pages to make that interactive. Javascript helps in the calculation, manipulation, and validation of the data on the web. HTML and CSS are counted as markup languages and both can help to make the page dynamic but very limited. Javascript helps to make the web pages dynamic at an advanced level. It is also called JS as an abbreviation. It can be used with any HTML document in three ways inline, internal, and external same as CSS. Programming syntax is almost similar to other programming languages.
Uses of Javascript
Mostly, Javascript is used in web applications and web development but it is also used in Game Development, creating web apps, creating mobile apps, to developed server-side applications, etc. Its scope is limitless and we can do many more things using this language. It is used by many companies like Google, Uber, Netflix, Microsoft, PayPal, Facebook, etc. There are many frameworks based on Javascript. The framework is like a tool that contains specific predefined libraries and functions that help to develop some applications. Javascript also has some popular frameworks that are used widely.
- Angular JS:- It is an efficient and powerful js framework developed by Google. It helps in data binding, form creation, and validation, adding new behaviors to the DOM element, etc.
- React JS:- It is developed by Facebook and got populated into a very small span of time. It is used to manage the high incoming traffic and the dynamic user interface.
- Vue JS:- It was developed in 2016 and it was quite popular at that time. Dual-mode integration is one of the attractive features to create high-end SPA, Data binding, CSS transition, and animations.
- Ember JS:- It was developed in 2015. It helps in two-way binding and help to establish a reliable platform to handle complicated user interface. Sites like LinkedIn, Netflix, Nordstrom use it.
- Node JS:- It is a server-side javascript framework. It works as a cross-platform in open-source marketing. It has some features of JAVA.
Companies that are using JavaScript
- LinkedIn:- It was using Rails previously and was quite slow. This time it switched to Node.js and using it on mobile got a boost up. It switched to Node.js to resolve the scaling problem. It made data sharing and building APIs very easy for the developers.
- Walmart:- It is one of the trading companies and we all know it only for retailers in the world. However, it is very much dependent on technologies. Previously it was using JAVA but to manage large traffic, it switched to node.js. Now, It became smooth to use the mobile app of Walmart.
- Google:- Google uses javascript almost everywhere in its service. Eg. Gmail service, search engine, docs, etc. The framework Angular JS (front-end framework) is developed by Google itself. V8 is called the heart of Node JS and it is developed by Google for Google search engine Chrome.
- Facebook:- React JS is developed by Facebook. and now Facebook, WhatsApp, and Instagram all use react. It is a front-end framework. We have to know that the page of Facebook contains different separate part and each need different Javascript to execute. If Javascript will not be on the browser then facebook even not let you to login into it.
- Netflix:- Previously, Netflix was also using Java, which was taking much time for development, and also manage=ing a large crowd on the cloud was hectic. It replaced Java with node.js and split the user interface into individual processes. This distribution helped in speeding up things.
Resources:-
- https://www.freecodecamp.org/news/what-is-javascript-definition-of-js
- https://www.hackreactor.com/blog/what-is-javascript-used-for
- https://www.ironhack.com/en/web-development/10-major-companies-using-javascript
- https://docs.angularjs.org/guide/introduction
- https://hackr.io/blog/best-javascript-frameworks
