If you’re interested in learning more, we’ve covered more examples of what is JavaScript used for, including code in more depth elsewhere. The creation of new libraries and frameworks is also making it possible to build backend programs with the language, such as web apps and server apps. It can also be used to build browser-based games and, with the help of certain frameworks, mobile apps for different operating systems. JavaScript isn’t only used to create websites. You can learn more about the difference between frontend and backend programming in our guide. When used on the server side, it is run on a remote computer. When used on the client side, JavaScript code is read, interpreted, and executed in the user’s web browser. The most popular application of it is on the client side (aka frontend), but since Node.js came on the scene, many people run JavaScript on the server side (aka backend) as well.
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Nowadays, JavaScript is an all-purpose programming language-meaning it runs across the entire software stack. It is also used to create things like animations, video players, and interactive maps. It’s is responsible for elements that the user can interact with, such as drop-down menus, modal windows, and contact forms.
JavaScript brings the website to life by adding functionality. With just HTML and CSS, you have a website that looks good but doesn’t actually do much. If you think about the basic makeup of a website, you have HTML, which describes and defines the basic content and structure of the website, then you have CSS, which tells the browser how this HTML content should be displayed-determining things like color and font. In simple terms, JavaScript is a programming language used to make websites interactive. This is especially useful when it comes to mastering a new programming language. What is JavaScript and what does it do?īefore you start learning something new, it’s important to understand exactly what it is and what it does. So-should you learn JavaScript? Let’s find out.
What is JavaScript and what does it do?.If you want to skip ahead to a certain section, just use the clickable menu below: We’ll then look at some of the main reasons for learning the language, and consider why it’s necessary to learn plain JavaScript first, before libraries and frameworks. In this guide, we’ll explore what JavaScript does and whether or not it’s still useful. With so many frameworks out there providing ready-to-use code, is it really necessary to learn JavaScript from scratch? You’ve no doubt heard that it’s an important web technology, but perhaps you’re not sure if JavaScript is all that relevant these days. With so many options these days, why learn JavaScript? Do you start with the easiest ones? Or the most useful ones? Both? If you want to become a web developer, you’ll be wondering what programming languages to learn.
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