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JavaScript Basics: Main Concepts and Principles Explained

What Is JavaScript Used For?

Javascript Basics
Interactive elements like pop-ups, slideshows, forms, animated graphics, and other customized content is added to websites with JavaScript. Almost every beginner in web development starts with the same subject: HTML.

By itself, HTML doesn't offer much interactivity, but most sites are still looking pretty sharp and dynamic. To develop such interactive websites, you should get familiar with JavaScript basics.

JavaScript (or JS for short) is a lightweight, dynamic scripting language, designed to support prototype-based programming. It is mainly used for front-end development, but also has a Node.js framework for the server-side scripting.

Developers praise Node.js server for being stable and for rendering quickly on both browsers and servers. Therefore, its popularity is rapidly growing.

Let's say you want to simplify programming using JavaScript. We suggest you learn about jQuery: a library of pre-written JavaScript code. If you wish to add a very stylish animation into your website, you can use the shorter code from jQuery. Even if you only know JavaScript basics, jQuery will allow you to improve websites without having to write the code yourself.

When it comes to Java vs. JavaScript, many people might be confused. Discussing this topic would have been easier when JavaScript had not introduced its server-side capabilities.

However, Java and JavaScript are used for different purposes and require different resources. Therefore, there should not be a Java vs. JavaScript battle as they are not even fighting in the same category.

The major difference between Java and JavaScript is that Java is a static programming language, used for back-end and application development. Even though JavaScript is slowly entering the server-side, its primary purpose was to deal with the front-end interface.

Why You Should Learn JavaScript: Purpose and Use

You might be asking: what is JavaScript used for? By learning JavaScript basics, you will improve your skill set enough to perform the following tasks:

  • Interactive content: you can add dynamic functionality to your website and make it more attractive to visitors. Nobody likes boring pages that simply present static information.
  • Event-driven: you can quickly edit websites by interacting with them.
  • Back-end: you can use Node.js framework for server-side scripting.
  • Game development: you can use one of many JavaScript libraries that can even help you create games.

Where to Start

If JavaScript is new to you, you might not be able to arrange your learning process efficiently. Here is a list of steps that you should follow to learn JavaScript basics and also its more advanced aspects:

  • If you want to make your big break in web development, JavaScript is not enough. You should learn HTML and CSS as well. Our tutorials on CSS and HTML provide you with enough information to prepare you for JavaScript.
  • Start by reading the JavaScript tutorial and introduction. They contain JavaScript basics, main functionality, and other useful information.
  • The following tutorials cover more specific aspects of JavaScript. For instance, you will learn how JavaScript is added to HTML, rules for writing code using JavaScript and usage of different JavaScript statements.
  • As a beginner, you should never miss an opportunity to practice. We offer convenient code examples for you to edit. Simply click our Try it Live button and see code changes instantly.
  • If you are struggling to use JavaScript, you can always turn to our interactive or video courses. Video courses give you much more information on the subject. Interactive courses will make it more fun to learn a new topic.
  • What You Will Learn

    These tutorials will offer you material covering a variety of different JavaScript functions. You'll be able to learn JavaScript basics through both theory and practice.

    Read explanations and practice by playing around with code examples before moving on to more advanced material. Also, you'll understand why it is essential to know JavaScript, as it is one of the three main web development languages, along with HTML and CSS.

    After reading our tutorial, do not stop there! Watch our video course which will explain the basic JavaScript syntax and functions in one hour. If you want to enroll in an interactive course, we have a solution for you as well. This gamified course will help you develop a website on your own and improve it with dynamic content!