What is JavaScript?
JavaScript is an open-source interpretive programming language. It is highly compatible and is used to develop network-based applications across various platforms. Easy implementation of Javascript is possible as it is integrated with both the Java programming language and the HTML.
Why learn JavaScript?
If you want a successful career as a software engineer, especially if you are involved in web development, then JavaScript is a crucial programming language to have in your arsenal. As a student, JavaScript is a programming language that will help you explore various web and application development opportunities.
JavaScript is the go-to programming language for programmers as it is one of the most used languages in web and application development domains. Having a good hand at JavaScript allows you to exploit frameworks (such as jQuery, Node.JS, React.JS, etc.) to develop front-end and back-end for different applications.
The ability to create professional-looking websites at appreciably low costs and also invest less time in the process of development is made possible by JavaScript. Developing websites with a console-based approach and good GUI experience is now a reality.
Due to the increasing application of JavaScript programming in the fop application development, game development, and, recently, mobile application development brings on many new opportunities for you in the domain of javascript application development.
A strong community of JavaScript developers provides many pre-written libraries and pre-structured frameworks that can be implemented directly when developing your software application.
To fully exploit all the resources of JavaScript, it is essential first to have a thorough understanding of the language, second to have enough practice, and finally to implement the gained knowledge to fulfill the requirement.
JavaScript Program
Here's a sneak peek of what JavaScript programs look like.
“This is my first attempt.” using JavaScript
<html>
<body>
<script language = "javascript" type = "text/javascript">
<!--
document.write("This is my first attempt.")
//-->
</script>
</body>
</html>
The program is elementary and uses no frameworks or libraries. But there are complex JavaScript programs that require the assistance of different vital libraries and frameworks. Following are a few critical JavaScript libraries and frameworks that you can use for application development:
- React
- Angular
- Polymer
- Node.js
- jQuery and many more.
Benefits of JavaScript Programming
Due to JavaScript's wide acceptance, many benefits are available to front-end, back-end, and full-stack developers. Following are some of the benefits one can expect when programming using JavaScript.
There is a massive data transaction between the client and the server. It is essential to check whether the inputs received from the client side are genuine or a potential threat to the server. JavaScript provides a system to validate the inputs (the data); the validation occurs when the data is still in the front-end stage of the transaction process. When the client-side validation is completed, the respective inputs are only submitted to the server. This ensures the safety of the server and prevents any unwanted breaches.
Before JavaScript, it wasn't easy to make any edits to the HTML pages, directly affecting the performance of the websites. But, JavaScript has eliminated the above issue. With the power of JavaScript programming, modifications can be easily made to websites (even if the respective websites are online). Depending upon the requirements, any number of HTML tags can be added or deleted. HTML pages can be easily manipulated, meaning JavaScript programming can be used to change the overall look and feel of the pages.
The more dynamic websites are, the more websites users can interact with. Notifications are essential in today's marketing world, as they keep the customers updated about your brand. JavaScript programming can be used to implement dynamic pop-ups that notify your website visitors about your deals, brand, website info, or anything you want, resulting in increased interaction time with your customers.
JavaScript improves customer experience by increasing the reaction time of the website. This is achieved by loading back-end data when the visitors are performing other activities on the website; the Ajax library is mainly used to perform these actions.
Your site needs to be presentable, as it helps the site to increase its traffic. Libraries such as BespokeJS and RevealJS can be used to make presentations (slides) for your website.
Server-based applications can be developed with the help of Node JS libraries. Node JS is an event-based library for developing web servers or other applications.
