What Is JavaScript Programming Language | Reflect Digital

JavaScript

JavaScript is a client-side object-oriented programming language that makes up one of the three core technologies of the world wide web. Its main functionality is to make webpages interactive and to provide online programs and widgets for users.

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JavaScript Javascript

What is JavaScript?

JavaScript is a predominantly client-side, object-oriented programming language that makes up one of the three core technologies in the World Wide Web. Its main functionality is to make webpages interactive and to provide online programs and widgets for users. Methods of using JavaScript include anything that is active on a webpage, like content updates, animations, pop-up menus, maps, images and scrolling videos. It is supported by a variety of web browsers including Chrome, Firefox and Edge, including most mobile browsers. It is said to be one of the most widely used programming languages in the world.

JavaScript is used to implement complex items on webpages. The main aim of JavaScript is to create a more user-friendly experience. In order to use JavaScript, two other technological components of a webpage must be present:  HTML and CSS. HTML is the structure of webpages that give meaning to content, and describes the page. CSS is used to define the presentation of HTML content, such as colour, layout and font. To create a good webpage all three components must be present.

What do I do with JavaScript?

JavaScript can be used to make a variety of products including games, apps, webpages and art. It is known as events-driven, meaning that changes are based on users’ interaction with the webpage such as clicking and typing on a keyboard. This is responded to by JavaScript.

JavaScript contains core language elements such as statements and control structures. It can also be extended for various purposes like server-side JavaScript that is run on a remote computer and allows the language to extend communication with databases. There are also more complex additional versions of JavaScript such as Node.js that adds more functionality to the website. Either way, it can dramatically change the appearance of the webpage.

Pros and Cons

Using JavaScript has many benefits. It saves huge amounts of time on automation and maintenance. Improving user experience carries many advantages like attracting more traffic to your site and a higher chance of having your site linked to. Special software is not required for users to view JavaScript outcomes, which has positive cost implications by saving users money.

Additionally, because it is executed client-side, it reduces the demand on the server. From a programmer’s perspective, it is a relatively easy language to learn, while also being versatile, allowing for wide-ranging uses and enhancements to the user experience.

However, JavaScript could cause security issues. Because the code is executed on the user’s computer, it could be used to manipulate the client’s system. For example, it could be used to hack into personal files or install software onto their computer. To prevent this, clients must be vigilant by installing anti-virus software and keeping the browser up-to-date. Using caution when entering personal data and downloading files is also a given to prevent any malicious use of JavaScript.

Since there is a large reliance on the end user, different web browsers may interpret JavaScript differently. Since the focus is on client-side scripts, they can be more unpredictable compared to server-side scripts.

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